ASP.NET

When route constraints fail [solved]

5-Apr-18 9:41

I changed the way my store handles querystrings by switching to route attr. Everything works fine with the routes, but I had custom error pages for the shopping pages that worked fine but don't route there anymore.

Guess my question is, when a page request that doesn't qualify with the route attr, where does the code go?
I don't even get the Global.asax Application Error any more. That's where I was handling page errors.

If it ain't broke don't fix it

jkirkerx5-Apr-18 9:57

what is Uniform Interface in REST

5-Apr-18 9:57

So it's called when [Route()] constraints fail.
You add another route for the action without querystring.

None of the documentation said this was possible, and only showed examples of one route attribute. Guess you can add as many as you need.

[HttpGet]        
[Route("Dp")]
[Route("Dp/{parameter:int?}/{name}")]
[HandleStoreError]
public ActionResult Dp(int? parameter, string name)

If it ain't broke don't fix it

Mou_kol5-Apr-18 2:55

Mou_kol

5-Apr-18 2:55

one rest principal is not clear to me that is Uniform Interface

what is Uniform Interface and how to explain this with points. thanks

Asp.Net MVC

Ankit Bopche28-Mar-18 5:42

Ankit Bopche

28-Mar-18 5:42

"Object reference not set to an instance of an object."

Hello Friends, i want suggestions for this problem. In ASP.net MVC am Using entity framework and trying to get a list of employees using the model class itself generated by system,now its showing me this error, how to handle it please suggest.

//Here is my index.cshtml code.

@model IEnumerable

@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}

Index

@Html.ActionLink("Create New", "Create")

@Html.DisplayNameFor(model => model.EmpName)

@Html.DisplayNameFor(model => model.Designation)

@Html.DisplayNameFor(model => model.Salary)

@Html.DisplayNameFor(model => model.Email)

@Html.DisplayNameFor(model => model.Mobile)

@Html.DisplayNameFor(model => model.Qualification)

@Html.DisplayNameFor(model => model.Manager)

@foreach (var item in Model) {

@Html.DisplayFor(modelItem => item.EmpName)

@Html.DisplayFor(modelItem => item.Designation)

@Html.DisplayFor(modelItem => item.Salary)

@Html.DisplayFor(modelItem => item.Email)

@Html.DisplayFor(modelItem => item.Mobile)

@Html.DisplayFor(modelItem => item.Qualification)

@Html.DisplayFor(modelItem => item.Manager)

@Html.ActionLink("Edit", "Edit", new { id=item.Eid }) |
@Html.ActionLink("Details", "Details", new { id=item.Eid }) |
@Html.ActionLink("Delete", "Delete", new { id=item.Eid })

}

Richard Deeming28-Mar-18 8:01

28-Mar-18 8:01

Something is null somewhere in your code when it shouldn't be.

Since you haven't told us which line of your view the exception is thrown from, we can't give you any more details.

Debug your code.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Ankit Bopche28-Mar-18 8:25

Ankit Bopche

28-Mar-18 8:25

Hello sir am attaching my homeController code to this file check it and let me know where should i make the changes and how at_least give me code_snippet for making changes into my code instead.

//HomeController

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using TestMvcApplication.Models;

namespace TestMvcApplication.Controllers
{
public class HomeController : Controller
{

// GET: Home
public ActionResult Index()
{
return View();
}

// get regester
public ActionResult Register()
{
return View();
}

public ActionResult Login()
{
return View();
}

[HttpPost]
public ActionResult Register(tblEmployee obj)
{
if (ModelState.IsValid)
{
MYDBEntities1 db = new MYDBEntities1();
db.tblEmployees.Add(obj);
db.SaveChanges();

}

return View(obj);
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Login(UserProfile objUser)
{
if (ModelState.IsValid)
{
using (MYDBEntities1 db = new MYDBEntities1())
{
var obj = db.UserProfiles.Where(a => a.UserName.Equals(objUser.UserName) && a.Password.Equals(objUser.Password)).FirstOrDefault();
if (obj != null)
{
Session["UserID"] = obj.UserId.ToString();
Session["UserName"] = obj.UserName.ToString();
return RedirectToAction("Register");
}
}

}

return View(objUser);
}
[HttpGet]
public ActionResult Edit(int id)
{
return View();
}

Ankit Bopche28-Mar-18 8:34

Ankit Bopche

28-Mar-18 8:34

Server Error in '/' Application.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 38:
Line 39:
Line 40: @foreach (var item in Model) {
Line 41:
Line 42:

Source File: c:\Users\Bittu\Documents\Visual Studio 2013\Projects\TestMvcApplication\TestMvcApplication\Views\Home\Index.cshtml Line: 40

Richard Deeming28-Mar-18 9:05

Re: Enable Image Zoom only

28-Mar-18 9:05

You're not passing a model to the view. Therefore, it's null, and you'll get a NullReferenceException when you try to iterate over it.

Your Index action needs to create an instance of the appropriate type, and pass it to the View method.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Enable Image Zoom only

sunsher28-Mar-18 3:24

sunsher

28-Mar-18 3:24

Hi,

Is there a way to disable page zoom and enable only image zoom of the page in a touch screen?

Thanks

User 418025431-Mar-18 15:20

User 4180254

31-Mar-18 15:20

Even though you may find an way to do it with code for your picture box or so, you cannot control browser functionality user can still zoom in/out your web page

modified 20-Sep-20 21:01pm.

HttpCookie vs Cookie, and multi-value HttpCookie

jkirkerx25-Mar-18 12:55

Re: HttpCookie vs Cookie, and multi-value HttpCookie

25-Mar-18 12:55

I don't get it here. I've always used HttpCookies to store multiple values in them
But using Cookie, it seems you can only store 1 value.

What I'm trying to do:
I have a mvc view called Bug Report. You click the button and it runs the Diag Controller with an action that uses HttpWebRequest and prior was WebClient. I changed it to transmit a cookie in the header, because WebClient was too basic.

On the page that is getting read, I have an home made security attrubute that uses OnActionExecuting and the ActionExecutingContext. If the request doesn't contain the session variable, it gets kicked out to Logout.

So to the best of my research, you can make a cookie container with multiple cookies.
This works fine, but I wanted to refine it more...
With HttpCookies, I can send 1 cookie with the 4 values, but with cookie, I have to send each cookie separate. I don't understand this part.

CookieContainer container = new CookieContainer();<br />
container.Add(new Cookie("a", httpCookie["a"]) { Domain = target.Host });
container.Add(new Cookie("b", httpCookie["b"]) { Domain = target.Host });
container.Add(new Cookie("c", httpCookie["c"]) { Domain = target.Host });
container.Add(new Cookie("d", "true") { Domain = target.Host });

var webRequest = (HttpWebRequest)WebRequest.Create(rUrl);
webRequest.CookieContainer = container;
using (var response = (HttpWebResponse)webRequest.GetResponse())
{
    model.Page_HTML = response.ToString();
}

So I wrote this, the main cookie, but I can't figure out how to store 4 records in it.

Cookie cookie = new Cookie() {
   Name = "Main",
   Expires = DateTime.Now.AddMinutes(1),
   Domain = target.Host,
   HttpOnly = true,
   Secure = true
};

On the OnActionExecuting side, I figured how to read the cookies. But it seems sort or silly to read 4 cookies. It looks like on this side I can just read a HttpCookie of any format.

HttpCookie cookie_A = filterContext.RequestContext.HttpContext.Request.Cookies.Get("a");

So my question is:
Am I beating a dead horse with a stick here and I should just be happy that the 4 cookies work?

If it ain't broke don't fix it

Richard Deeming26-Mar-18 8:37

Re: HttpCookie vs Cookie, and multi-value HttpCookie

26-Mar-18 8:37

Multi-valued cookies are not a standard feature. The HttpCookie class "fakes" support by serializing the values to a string similar to a query string:
HttpCookie - Reference Source[^]

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

jkirkerx5-Apr-18 12:24

Need to loop through Kendo grid to get the selected value of all the Dropdowns in the Grid

5-Apr-18 12:24

Thanks Richard!

So in other words, an HttpCookie write can write an array of values that is parsed when read by HttpCookie.
Sort of a way to make cookies easier for beginners and take the complexity out of it, or for compatibility with some other standard written by other programs. Or maybe proprietary to just reading our own cookies in asp.net - most likely answer. Sort of like those dumb html objects in webforms.

And perhaps cookie is the standard way to read and write a cookie.
Glad I didn't beat the horse more with my stick on the subject.

If it ain't broke don't fix it

indian14320-Mar-18 14:09

Re: Need to loop through Kendo grid to get the selected value of all the Dropdowns in the Grid

20-Mar-18 14:09

Hi,

I have a Kendo grid I am have a dropdown as the first element of it, I want to get the selected text or value of those all drop downs if they are selected. If they are not selected there is no need to count them.

I am using jQuery to do it, tried many options so far there is no luck. Grid is very big, hence I am just putting only the code where I am trying to access it.
This is is how I am trying it, so far no luck, any help would be very helpful, thanks in advance.

 var grid = $( "#budgetdGrid" );

        var dataSource = grid.dataSource;
        var columns = $("#budgetdGrid").data("kendoGrid").columns;
        var rows = $("#budgetdGrid").data("kendoGrid").rows;

        var noOfCols = columns.length;

        grid.items().each(function(a) {
               alert(a.text())
        });

I am trying to access it within this function:

    function onLineDropDownChange(e) {<br />
        //alert(e.sender.select())
        //alert(e.sender.text());

        var grid = $( "#budgetdGrid" );

        var dataSource = grid.dataSource;
        var columns = $("#budgetdGrid").data("kendoGrid").columns;
        var rows = $("#budgetdGrid").data("kendoGrid").rows;

        var noOfCols = columns.length;

        grid.items().each(function(a) {
               alert(a.text())
        });

        //alert(e.sender.select().val())
        //rows.each(function(e) {
        //    var grid = $("#budgetdGrid").data("kendoGrid");
        //    var dataItem = grid.dataItem(this);

        //    alert(dataItem);
        //})

        var tr = this.element.closest("tr");
        var line_no="";
        var prev_line = [];
        //    var line_arr = ['200', '201', '101a-cw', '101a-mc', '70p-cw', '70p-mc'];
        var lin_val = tr.find("input[id^='inputLine_']").val();
        if ( lin_val != "" && lin_val != 'undefined') {
            line_no = tr.find("input[id^='inputLine_']").data("kendoDropDownList").text().substr(0, tr.find("input[id^='inputLine_']").data("kendoDropDownList").text().indexOf('('));
        }
        if (lin_val != '' && line_no != '') {
            $("#doeGrid").find("#budgetdGrid  tbody").find('tr').each(
            function () {
                var id = $(this).find("input[id^='inputLine_']").val();
                if (id == lin_val && lin_val != "" && id != "") {
                    prev_line.push(id);
                }
            });
            if (prev_line.length > 1) {
                alert("You have already selected the Line Item in the previous rows");
            }
            else {

                if ((line_no.substr(0, line_no.indexOf('-')) == '200') || (line_no.substr(0, line_no.indexOf('-')) == '201') || (line_no == '101a-cw') ||
                    (line_no == '101a-mc') || (line_no == '70p-cw') || (line_no == '70p-mc') || (line_no.substr(0, line_no.indexOf('-')) == '202' && '@Session["FiscalYearCode"]'=='FY 2015-2016')||
                    (line_no.substr(0, line_no.indexOf('-')) == '204' && '@Session["FiscalYearCode"]'=='FY 2015-2016')||
                    (line_no.substr(0, line_no.indexOf('-')) == '203' && '@Session["FiscalYearCode"]'=='FY 2015-2016') ||
                    (line_no.substr(0, line_no.indexOf('-')) == '205' && '@Session["FiscalYearCode"]'=='FY 2015-2016'))
                    //if (containsLine(line_no, line_arr))
                {
                    if (containsAny('@Model.Service_Code', [30, 33, 34, 43, 51, 52]) && '@Model.Program_Code' >= 87) {
                        tr.find("input[name^='txt_budgt']").removeAttr("disabled = 'disabled'");
                        tr.find("input[name=txt_IndivUOS]").removeAttr("disabled = 'disabled'");
                    }
                    else if (('@Model.Service_Code' == 48 && '@Model.Program_Code' >= 87)) {
                        tr.find("input[name^='txt_budgt']").removeAttr("disabled = 'disabled'");
                        tr.find("input[name=txt_IndivUOS]").removeAttr("disabled = 'disabled'");
                        tr.find("input[name=txt_NtpGrp]").removeAttr("disabled = 'disabled'");
                        tr.find("input[name=txt_NtpDos]").removeAttr("disabled = 'disabled'");
                    }
                    else {
                        tr.find("input[name^='txt_budgt']").removeAttr("disabled = 'disabled'");
                    }
                }
                else if (('@Session["FiscalYearCode"]'=='FY 2016-2017') || ('@Session["FiscalYearCode"]'=='FY 2017-2018'))
                {
                    tr.find("input[name^='txt_dirCst']").removeAttr("disabled = 'disabled'");
                }
                else {
                    tr.find("input[name^='txt_budgt']").removeAttr("disabled = 'disabled'");
                }
            }           
        }
        else {
            alert("Please Choose Proper Line Item");
        }
    }

This function will be called when there is any change in the Grid, onchange but when change occurs it has to loop through the whole grid and then find out the selected text or values of the dropdowns then it will be acted upon the selected items of the dropdowns.

Please any help would be very very supportive - thanks in advance.

Thanks,

Abdul Aleem

"There is already enough hatred in the world lets spread love, compassion and affection."

Vincent Maverick Durano20-Mar-18 17:40

Vincent Maverick Durano

20-Mar-18 17:40

Your issue isn't actually direclty related to ASP.NET in general. There may be some here who knows about Telerik controls, but I believed you stand a better chance by posting it at Telerik dedicated forums: Forum threads about Grid Kendo UI for jQuery[^]

Or atleast at JavaScript forums section: JavaScript Discussion Boards[^]

Re: Need to loop through Kendo grid to get the selected value of all the Dropdowns in the Grid

indian14320-Mar-18 20:44

Re: Need to loop through Kendo grid to get the selected value of all the Dropdowns in the Grid

20-Mar-18 20:44

I don't have membership for Telerik forum, only licensed members are eligible to put questions, I am also searching but if somebody can help me, it would be a great help - thanks buddy.

Thanks,

Abdul Aleem

"There is already enough hatred in the world lets spread love, compassion and affection."

Richard Deeming21-Mar-18 9:24

Re: Need to loop through Kendo grid to get the selected value of all the Dropdowns in the Grid

21-Mar-18 9:24

indian143 wrote:
only licensed members are eligible to put questions

But surely only licensed members are eligible to use the controls? Confused | :confused:

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

indian14321-Mar-18 10:07

Re: Need to loop through Kendo grid to get the selected value of all the Dropdowns in the Grid

21-Mar-18 10:07

Yes but my Company has the license not me, hence the problem Rick (do you go with Rick or Richard)

Thanks,

Abdul Aleem

"There is already enough hatred in the world lets spread love, compassion and affection."

indian14321-Mar-18 7:29

how to find a running total in a gridView templateField

21-Mar-18 7:29

Hi,

I could able to get up to here so far but the val or text functions are not working on those items. Here is the below code I did,

       var dataSource = $("#budgetdGrid").data("kendoGrid").dataSource;        

        var data = dataSource.data(); // or this.view();        
        for (var i = 0; i < data.length; i++) {
            alert(data[i][0].val());
        }

But the alert(data[i][0].val()); is throwing error, I tried with text also, that one also is throwing errors saying that those functions are not supported etc. budgetdGrid is the Kendo Grid, and the first element of that (I mean index) 0 is dropdown list selected text I want to get, for all the rows, I am looping through rows correctly here that the number of rows 8 are matching with what I have in Grid, but I am not able to get the selected items text value.

Any help would be greatly helpful, thanks in advance.

I have tried in the following way also, but its pulling out only the value but not the selected text, I need the selected text rather than value because I need to compare with text but not with the value:

            $("#doeGrid").find("#budgetdGrid  tbody").find('tr').each(
            function () {
                var id = $(this).find("input[id^='inputLine_']").val();
                var txt = $(this).find("input[id^='inputLine_']").text();
                alert(id);
                alert(txt)
                if (id == lin_val && lin_val != "" && id != "") {
                    prev_line.push(id);
                }
            });

Thanks,

Abdul Aleem

"There is already enough hatred in the world lets spread love, compassion and affection."

-- modified 21-Mar-18 14:19pm.

Member 933127820-Mar-18 12:40

Member 9331278

20-Mar-18 12:40

I have a gridview with a score column (4).
I am trying to get the total score.
Thanks anyone..please

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ID,EP,supEmail" DataSourceID="SQLDuties" OnPreRender="GridView1_PreRender" OnRowDataBound="GridView1_RowDataBound">
                        <Columns>
                            <asp:CommandField ShowEditButton="True" />
                            <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" ReadOnly="True" SortExpression="ID" Visible="False" />
                            <asp:TemplateField HeaderText="Duties" SortExpression="Duties">
                                <EditItemTemplate>
                                    
                                    <asp:Label ID="EditDuties" runat="server" Text='<%# Bind("Duties") %>'></asp:Label>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <asp:Label ID="Label1" runat="server" Text='<%# Bind("Duties") %>'></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Agreed" SortExpression="Agreed">
                                <EditItemTemplate>
                                    
                                    <asp:Label ID="EditTargets" runat="server" Text='<%# Bind("Agreed") %>'></asp:Label>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <asp:Label ID="Label2" runat="server" Text='<%# Bind("Agreed") %>'></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Score (1-5)" SortExpression="Score">
                                <EditItemTemplate>
                                    <asp:TextBox ID="txtScore" runat="server" Text='<%# Bind("Score") %>' TextMode="Number"></asp:TextBox>
                                    <asp:RequiredFieldValidator ID="RFVScore" runat="server" ErrorMessage="Score Require" ControlToValidate="txtScore" ForeColor="red"></asp:RequiredFieldValidator>
                                    <asp:RangeValidator ID="RangeValidator2" runat="server" ErrorMessage="1 to 5" MaximumValue="5" MinimumValue="1" ControlToValidate="txtScore" ForeColor="red"></asp:RangeValidator>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <asp:Label ID="Label3" runat="server" Text='<%# Bind("Score") %>'></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:BoundField DataField="Comment" HeaderText="Comment" SortExpression="Comment" />
                            <asp:BoundField DataField="EP" HeaderText="EP" SortExpression="EP" Visible="False" />
                            <asp:BoundField DataField="supEmail" HeaderText="supEmail" SortExpression="supEmail" Visible="False" />
                        </Columns>
                        <EmptyDataTemplate>
                            <br />
                              </EmptyDataTemplate>
                    </asp:GridView>

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
       {
           int total = 0;
           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               total = total +  Convert.ToInt32( e.Row.Cells[4].Text.ToString());
           }
           Response.Write(total.ToString());

       }

Re: how to find a running total in a gridView templateField

Vincent Maverick Durano20-Mar-18 17:35

Vincent Maverick Durano

20-Mar-18 17:35

e.Row.Cells[4].Text will only work for BoundField Columns. For accessing TemplateFields, you need to use FindControl() method. For example:

var score = ((Label)e.Row.Cells[4].FindControl("Label3")).Text;

Page.RegisterStartupScript Method

A_Griffin16-Mar-18 2:23

A_Griffin

16-Mar-18 2:23

I am hoping someone can explain to me the rationale behind the Page.RegisterStartupScript method... What does it achieve that simply writing your script to a Literal doesn't? I've never had a reason to use it - if I want to add JavaScript to a page I simply do that. I am no doubt being very silly, but..

Re: Page.RegisterStartupScript Method

Richard Deeming16-Mar-18 2:46