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Hi,
I call a javascript function b from another function a.
in the function b at certain conditions i want to stop the javascript execution and i have did it by throwing an exception by using Throw New Error('Stopi').
It is working well.
1. Is it good to stop the execution of javascript abruptly.
2. Is it bad if the functions are not returned to the calling function and finally to the operating system.
3. I will there be a over flow of stack or will stack keep increasing if i am throwing many such errors.
Meanwhile IE shows the yellow exclamation icon in its status bar as usual that there is a javascript exception. When you click that you can see the error description as 'Stopi' which i have thrown.
Here is an example...
<input type='text' name='name' id='name' />
function validate()<br />
{<br />
isempty('name','Please enter your name');<br />
}<br />
<br />
function isempty(src,msg)<br />
{<br />
var so = document.getElementById(src)<br />
if(so.value=='')<br />
{<br />
alert(msg)<br />
so.focus()<br />
throw new Error('Stopi')<br />
}<br />
}
so i dont have to use if condition when validating. no braces, no return statement, and no need to call focus for every if condition so this code reduces 6 lines and multiplied by number of input controls you are going validate. so i just need to call isempty and if the control has empty value then the user will get an alert and the execution stops.
Please suggest.
Today's Beautiful Moments are
Tomorrow's Beautiful Memories
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Although your approach is not that bad, I would declare a variable which indicates all fields are validated.
<br />
<script language="javascript" type="text/javascript"><br />
var bValid = new Boolean();<br />
bValid = true;<br />
</script><br />
Then I would change the function isempty like so :
function isempty(src, msg)
{
var so = document.getElementById(src)
if(so.value=='')
{
alert(msg)
so.focus()
bValid = false;
}
else
{
bValid = true;
}
}
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hi,
thats nice but i call too many functions like isempty...
besides IE shows the yellow error exclamation...
Today's Beautiful Moments are
Tomorrow's Beautiful Memories
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Hi,
I have a datagrid(with update and cancel buttons) and I have implemented sorting and custom paging on this datagrid. Everything was working fine. BUT when I sort the contents of the datagrid or change the page of the datagrid and then if I click on the Edit button, for example if I click the edit on the first row of the second page then the row which the editItemIndex highlights is the first row of the FIRST page. Similar problem faced if i sort the datagrid and click on any edit row of the sorted datagrid. The main problem lies in accessing the row, in my code i use
dataGrid.EditItemIndex = e.Item.ItemIndex;
But the above does not work properly. I even tried-
dataGrid.EditItemIndex = e.Item.DataSetIndex;
But the above also does not work.
The entire code is mentioned below for your reference. PLEASE HELP ME. THANKS IN ADVANCE.
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _Default : System.Web.UI.Page
{
ClsMngr obj = new ClsMngr();
ClsUsers objUsers = new ClsUsers();
public static int numberDiv;
private int TotalRecords = 0;
private int TotalPages = 0;
private int PageSize = 0;
private int CurrentPage = 0;
protected void Page_Load(object sender, EventArgs e)
{
dataGrid.PagerStyle.Mode = PagerMode.NumericPages;
if (!IsPostBack)
{
fillDataGrid();
}
}
protected void dataGrid_Edit(object source, DataGridCommandEventArgs e)
{
dataGrid.EditItemIndex = e.Item.ItemIndex;
fillDataGrid();
}
protected void dataGrid_Update(object source, DataGridCommandEventArgs e)
{
objUsers.Action = "update";
objUsers.UserId = Convert.ToInt32(e.Item.Cells[0].Text);
objUsers.UserName = ((TextBox)e.Item.Cells[1].Controls[0]).Text;
objUsers.GroupId = Convert.ToInt32(((DropDownList)e.Item.Cells[2].Controls[0].FindControl("ddlGroup")).Text);
obj.Users(objUsers);
Response.Redirect("DataGrid.aspx");
}
protected void dataGrid_Cancel(object source, DataGridCommandEventArgs e)
{
dataGrid.EditItemIndex = -1;
fillDataGrid();
}
protected void dataGrid_Delete(object source, DataGridCommandEventArgs e)
{
objUsers.Action = "delete";
objUsers.UserId = Convert.ToInt32(e.Item.Cells[0].Text);
obj.Users(objUsers);
Response.Redirect("DataGrid.aspx");
}
protected void dataGrid_ItemDataBound(object sender, DataGridItemEventArgs e)
{
object objGroupId = DataBinder.Eval(e.Item.DataItem, "User_GroupId");
if (e.Item.ItemType == System.Web.UI.WebControls.ListItemType.Item ||
e.Item.ItemType == System.Web.UI.WebControls.ListItemType.AlternatingItem)
{
e.Item.Cells[2].Text = GetGroupName(Convert.ToInt32(objGroupId));
}
if (e.Item.ItemType == System.Web.UI.WebControls.ListItemType.EditItem)
{
ClsGroups objGroups = new ClsGroups();
objGroups.Action = "select";
objGroups.GroupIdFlag = 1;
objGroups.NameEngFlag = 1;
DataTable dtGroup = obj.Groups(objGroups);
((DropDownList)e.Item.FindControl("ddlGroup")).DataSource = dtGroup;
((DropDownList)e.Item.FindControl("ddlGroup")).DataValueField = "Group_GroupId";
((DropDownList)e.Item.FindControl("ddlGroup")).DataTextField = "Group_NameEng";
((DropDownList)e.Item.FindControl("ddlGroup")).SelectedValue = objGroupId.ToString();
((DropDownList)e.Item.FindControl("ddlGroup")).DataBind();
}
}
private string GetGroupName(int intGroupId)
{
ClsGroups objGroups = new ClsGroups();
objGroups.Action = "select";
objGroups.GroupId = intGroupId;
objGroups.GroupIdFlag = 1;
objGroups.NameEngFlag = 1;
DataTable dtGroup = obj.Groups(objGroups);
if (dtGroup.Rows.Count == 0) return "";
return dtGroup.Rows[0]["Group_NameEng"].ToString();
}
protected void Pager(object source, DataGridPageChangedEventArgs e)
{
dataGrid.CurrentPageIndex = e.NewPageIndex;
fillDataGrid();
}
protected void NavigationLink_Click(object source, CommandEventArgs e)
{
int RecordCount;
DataTable dSet = null;
dSet = (DataTable)Cache["AllRecords"];
PageSize = dataGrid.PageSize;
switch (e.CommandName)
{
case "First":
ViewState["CurrentPage"] = 0;
dataGrid.CurrentPageIndex = 0;
dataGrid.DataSource = dSet;
dataGrid.DataBind();
PreviousPage.Enabled = false;
NextPage.Enabled = true;
FirstPage.Enabled = false;
LastPage.Enabled = true;
TotalRecords = (int)ViewState["TotalRecords"];
lblPageDetails.Text = "1 - " + PageSize.ToString() + " of " + TotalRecords.ToString();
break;
case "Last":
TotalPages = (int)ViewState["TotalPages"];
ViewState["CurrentPage"] = TotalPages - 1;
dataGrid.CurrentPageIndex = TotalPages - 1;
dataGrid.DataSource = dSet;
dataGrid.DataBind();
NextPage.Enabled = false;
PreviousPage.Enabled = true;
LastPage.Enabled = false;
FirstPage.Enabled = true;
RecordCount = (TotalPages - 1) * PageSize;
TotalRecords = (int)ViewState["TotalRecords"];
lblPageDetails.Text = (RecordCount + 1).ToString() + " - " + TotalRecords.ToString() + " of " + TotalRecords.ToString();
break;
case "Next":
CurrentPage = (int)ViewState["CurrentPage"];
CurrentPage = CurrentPage + 1;
ViewState["CurrentPage"] = CurrentPage;
dataGrid.CurrentPageIndex = CurrentPage;
dataGrid.DataSource = dSet;
dataGrid.DataBind();
RecordCount = CurrentPage * PageSize;
TotalRecords = (int)ViewState["TotalRecords"];
if (CurrentPage == dataGrid.PageCount - 1)
{
NextPage.Enabled = false;
PreviousPage.Enabled = true;
LastPage.Enabled = false;
FirstPage.Enabled = true;
lblPageDetails.Text = (RecordCount + 1).ToString() + " - " + TotalRecords.ToString() + " of " + TotalRecords.ToString();
}
else
{
NextPage.Enabled = true;
PreviousPage.Enabled = true;
LastPage.Enabled = true;
FirstPage.Enabled = true;
lblPageDetails.Text = (RecordCount + 1).ToString() + " - " + (RecordCount + PageSize).ToString() + " of " + TotalRecords.ToString();
}
break;
case "Prev":
CurrentPage = (int)ViewState["CurrentPage"];
CurrentPage = CurrentPage - 1;
ViewState["CurrentPage"] = CurrentPage;
dataGrid.CurrentPageIndex = CurrentPage;
dataGrid.DataSource = dSet;
dataGrid.DataBind();
RecordCount = CurrentPage * PageSize;
TotalRecords = (int)ViewState["TotalRecords"];
if (CurrentPage == 0)
{
PreviousPage.Enabled = false;
NextPage.Enabled = true;
FirstPage.Enabled = false;
LastPage.Enabled = true;
lblPageDetails.Text = "1 - " + PageSize.ToString() + " of " + TotalRecords.ToString();
}
else
{
NextPage.Enabled = true;
PreviousPage.Enabled = true;
LastPage.Enabled = true;
FirstPage.Enabled = true;
lblPageDetails.Text = (RecordCount + 1).ToString() + " - " + (RecordCount + PageSize).ToString() + " of " + TotalRecords.ToString();
}
break;
}
}
protected void onSort(object source, DataGridSortCommandEventArgs e)
{
objUsers.Action = "select";
DataTable dtUsers = obj.Users(objUsers);
if (dtUsers != null)
{
DataView dataView = new DataView(dtUsers);
if ((numberDiv % 2) == 0)
dataView.Sort = e.SortExpression + " " + "ASC";
else dataView.Sort = e.SortExpression + " " + "DESC";
numberDiv++;
dataGrid.DataSource = dataView;
dataGrid.DataBind();
}
}
private void fillDataGrid()
{
objUsers.Action = "select";
DataTable dtUsers = obj.Users(objUsers);
Cache["AllRecords"] = dtUsers;
DataTable dtUsersNew = new DataTable();
dtUsersNew = (DataTable)Cache["AllRecords"];
ViewState["TotalRecords"] = dtUsersNew.Rows.Count;
dataGrid.CurrentPageIndex = 0;
dataGrid.DataSource = dtUsersNew;
dataGrid.DataBind();
TotalRecords = (int)ViewState["TotalRecords"];
ViewState["TotalPages"] = dataGrid.PageCount;
ViewState["CurrentPage"] = 0;
PreviousPage.Enabled = false;
NextPage.Enabled = true;
FirstPage.Enabled = false;
LastPage.Enabled = true;
if (TotalRecords == 0)
{
dataGrid.Visible = false;
Panel1.Visible = false;
}
else if (TotalRecords <= dataGrid.PageSize)
{
dataGrid.Visible = true;
Panel1.Visible = true;
lblPageDetails.Text = "1 - " + TotalRecords.ToString() + " of " + TotalRecords.ToString();
NextPage.Enabled = false;
LastPage.Enabled = false;
}
else
{
dataGrid.Visible = true;
Panel1.Visible = true;
lblPageDetails.Text = "1 - " + dataGrid.PageSize.ToString() + " of " + TotalRecords.ToString();
}
}
}
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1) There is a specific ASP.NET forum
2) No one is going to read all of this code
I know the language. I've read a book. - _Madmatt
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Hi,
I have a developed a mobile client application for which i wants to make a server application.
I have my website which have a database to it and i wants that both server application and my website will share the same database.
The main feature of the server application i to make continuous http request to a URL and capture the response and perform according to the response.
But i dont know what to do in this regards, i am totally stucked to this please help me what to do.
which kind of application i have to make either web application or web services & how i will integrate it to my website.
Thanks in advance
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I believe what you want to do is:
1) Store the database on your website
2) Create whatever web-app you want on your website
3) Create a data access layer to your database which exposes a series of webservices for your data.
4) Modify your mobile client application to use those webservices to access the data which is stored on your website.
You can poll the webservice as often as you would like to get the latest data from the server. Or, maybe you should think of a "push" architecture where the webserver would generate an email to the client indicating that data has changed, maybe even send the new data to the client as an XML attachment which could be used to update the client.
Good luck.
David
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My Name is Jennifer Clark I am in the business of sales and retails for last few years, now I am thinking to make my business on web, I came across the company Webplore. They are in offering Web site Development Services, Application Maintenance Services, Product Development Services, and Search Engine Optimization Services.
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I guess you're advertising here :S
Please don't forget to mark 'Good Answer', if you find it really a good one!
Kashif
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Blatent advertising. Clear off.
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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Interesting post. The webplore company site has major design flaws, such as looping back to the home page on a lot of links. It also has no published address or phone number, and google can't find that info anywhere else either.
Obviously Jennifer is either employed by, or is, this company. She seems to have posted on a lot of forums with the same advertising junk.
I just think it is a shame that now the entire world knows not to use them for web development because of a poorly executed publicity campaign, not that anyone is able to contact them anyway. What a waste of Jennifer's time.
If you have knowledge, let others light their candles at it.
Margaret Fuller (1810 - 1850)
www.JacksonSoft.co.uk
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Wow - you really think we're all stupid. AND you seem to think that a forum full of web developers is a good place to pimp your company. That's really quite amusing, in a sad sort of way.
Don't give up your day job.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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how i can parse the jquery json object to data in asp.net..
here is my client side test code
********************************
var prdnameArray = new Array();
prdnameArray[0]="Saab";
prdnameArray[1]="Volvo";
prdnameArray[2]="BMW";
var prdamountArray=new Array();
prdamountArray[0]="456";
prdamountArray[1]="789";
prdamountArray[2]="678";
var data = {
"sales": [
{"prdnameArray":prdnameArray},
{"prdamountArray":prdamountArray}
]
}
alert(data);
//alert(data.sales[0].prdnameArray[0]);
$.ajax({
type: "POST",
url: "jsonIntro.aspx",
timeout: 5000,
data:data,
contentType:"application/json;charset=utf-8",
dataType:"JSON",
success: function(d) {
alert(d);
return false;
},
error: function(request, status, errorThrown) {
alert(status);
}
});
*************************************************
iam using stream reader to read the object and trying to parse using json parser...but always it shows error..
my C# asp.net code is like this.
****************************
System.IO.StreamReader sr = new System.IO.StreamReader(Request.InputStream);
JsonParser parser = new JsonParser(sr, true);
JsonObject obj = (JsonObject)parser.ParseObject();
JsonArray prdname = (JsonArray)obj["sales"][0];
Response.Write(prdname[0]);
*******************************
Anyone help me???
Thanks in advance...
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Member 3801407 wrote: ...but always it shows error..
Since most of us are not mind readers here don't you think it would be a good idea to show the error you are getting? 
I know the language. I've read a book. - _Madmatt
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yes,off-course itz not a good idea to show the error..but i did it testing purpose only...Thanks for ur suggestion..
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What suggestion?!?
I was trying to point out you are asking for help with an error, but not telling us what the error is!
I know the language. I've read a book. - _Madmatt
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hello friends......
as i am new to this programming in javascript i need ur help.
i have to make a desktop news ticker with the help of MioFactory v3.26 (http://www.mioplanet.com/products/miofactory/index.htm[^])
but what i need is the combination of two templates 1. SCROLLING ALERT and 2. DESKTOP TICKER. i know that its all about just copy and paste the javacripts given inside the templates.
what i need is the
1. DESKTOP TICKER with the features of SCROLLING ALERT that is whenever xml file is updated it automatically refreshes the contents and display the scrolling text (plz try to do this practically by downloading miofactory v3.26 from www.mioplanet.com).
2. also i get error message MESSAGE FROM WEBPAGE(a dialog box appears and displays information of xml file but it is not so in SCROLLING ALERT).
WAITING FOR A VERY POSITIVE RESPONSE.
REGARDS
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I think you are looking for something like Server Push technology. 
In case of Normal Http Request - Response, it is not possible simply. Rather I think you need to expose this feature through an HTTPHandler. You ping the handler using AJAX to get new response. Whenever new alert received, just place a floating div and write the content.
You can also adjust the scroll position, so that the Alert also scrolls down as you scroll the page.
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thanks a lot sir for reply.....
but sir i want u 2 please use the miofactory once and then u will know that we dont need to know a much knowledge of programming.
all coding is done inside the engine itself. we just have to arrange according to our need.
i think if i will talk 2 u on phone then may b i will xplain u my problem in a better way. please mail me ur contact no. at -
dahras@gmail.com
it will b confidentially saved 2 me
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Ok.. I will do that.
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sir i am waiting for your contact information
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