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Calling __doPostBack()

Radhakrishnan G.4-Feb-09 3:00

Radhakrishnan G.

4-Feb-09 3:00

How to trigger postback for a javascript

<br />
<script language="javascript" type="text/javascript"><br />
// <br />
function Button1_onclick()<br />
{<br />
    document.forms[0]['fileBrowse'].click();<br />
    document.forms[0]['TextBox1'].value = document.forms[0]['fileBrowse'].value;<br />
    __doPostBack( 'TextBox1','');<br />
}<br />
<br />
// <br />
</script><br />
<br />
<br />
<body><br />
    <form id="form1" runat="server"><br />
    <div><br />
        <input id="fileBrowse" type="file" style="visibility: hidden" /><br />
        <input id="Button1" type="button" value="button" onclick="return Button1_onclick()" /><br />
        <input id="TextBox1" type="text" /><br />
    </div><br />
    </form><br />
</body><br />

this code showing an error "object expected" while debugging javascript
Confused | :confused:

Regards,
Radhakrishnan

Re: Calling __doPostBack()

SeMartens4-Feb-09 3:19

SeMartens

4-Feb-09 3:19

Hi,

i'm not sure, but maybe you have to use

document.getElementById()

and the onclick doesn't seem correct:

onclick="javascript:Button1_onclick();"

Do you get the error on your server or on the client?

Regards
Sebastian

It's not a bug, it's a feature!

Check out my CodeProject article Permission-by-aspect.

Me in Softwareland.

Re: Calling __doPostBack()

Radhakrishnan G.4-Feb-09 3:37

Radhakrishnan G.

4-Feb-09 3:37

Error at client side
on that __doPostBack()

Re: Calling __doPostBack()

SeMartens4-Feb-09 3:52

SeMartens

4-Feb-09 3:52

You can use the Firefox error console to get the line and a detailed error message.

It's not a bug, it's a feature!

Check out my CodeProject article Permission-by-aspect.

Me in Softwareland.

Re: Calling __doPostBack()

ToddHileHoffer4-Feb-09 6:53

ToddHileHoffer

4-Feb-09 6:53

document.getelementbyid('yourButtonId').click();

I didn't get any requirements for the signature

Re: Calling __doPostBack()

Radhakrishnan G.4-Feb-09 16:57

Radhakrishnan G.

4-Feb-09 16:57

Error is at line __doPostBack( 'TextBox1','');

"object expected"

Re: Calling __doPostBack()

ToddHileHoffer5-Feb-09 2:29

ToddHileHoffer

5-Feb-09 2:29

That's not what I meant.

Drag a button onto your form. Double click the button in design view to generate server side method.

Add the following in the page_load (server side code)
this.Button1.Style.Add("display", "none");

Add the following javascript to your page.

function CallServerMethod() {
var Button1 = document.getElementById("<%=Button1.ClientID %>");
Button1.click();
}

In your javascript replace

__doPostBack( 'TextBox1','');

with

CallServerMethod()

Add server side code to Button1_Click() event

I didn't get any requirements for the signature

How to Transfer Data From SQL Server 2000 to MS Access using c#

Vishal094-Feb-09 1:57

Vishal09

4-Feb-09 1:57

I want to convert my database of SQL server 2000 (.mdf) File to MS Access Database(.mdb)File using C# Code.

Re: How to Transfer Data From SQL Server 2000 to MS Access using c#

Manas Bhardwaj4-Feb-09 2:34

Manas Bhardwaj

4-Feb-09 2:34

Vishal09 wrote:
I want to convert my database of SQL server 2000 (.mdf) File to MS Access Database(.mdb)File using C# Code.

Why don't you export the data directly? Confused | :confused:

Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: How to Transfer Data From SQL Server 2000 to MS Access using c#

Paddy Boyd4-Feb-09 3:00

Paddy Boyd

4-Feb-09 3:00

Why??

If you just need to access the data in Access, you can set up tables that link to the SQL server database...

Re: How to Transfer Data From SQL Server 2000 to MS Access using c#

ToddHileHoffer4-Feb-09 8:27

ToddHileHoffer

4-Feb-09 8:27

Stop trying to make sense and supply the code for him. Now get on it.

I didn't get any requirements for the signature

Controls not visible

sana174-Feb-09 1:56

sana17

4-Feb-09 1:56

ASALAMOALEKUM All,

I am working with video chat.. (web application ASP.NET with C#)
For this I am using VidGrab SDK... refernces have been added successfully but the problem is control is not visible in the toolbox.
(where as when i go with it on windows application in the same way, its control is visible)

As far as i have searched, with web application, controls are added in different ways but those ways are not defined..
can anyone help me out..

if we have to write some html code for designing control, then please refer any article which explains how to write... coz i didnt get related article!

"If there is anyother SDK or way for online video chat please recommend"

waiting for reply !

Thanks!
take care
Regards,
SANA

$@N@

Re: Controls not visible

Christian Graus4-Feb-09 9:23

Christian Graus

4-Feb-09 9:23

So, does this SDK have a web control, or just a windows one ? Why not ask they people who wrote the SDK you bought for help ?

Christian Graus

Driven to the arms of OSX by Vista.

[newbie] Dropdownlist control disappearing

jon-804-Feb-09 1:52

jon-80

4-Feb-09 1:52

I'm having an unusual problem where a control of type System.Web.UI.WebControls.Dropdownlist is somehow disappearing when I select 'Save' on my form. I've gone through my code a couple of times and I'm not explicitly altering its Visible property.

Control ProductVersion is disappearing when I select 'Save'. In the code this is captured within protected void btnMultifunction_Click(object sender, EventArgs e)

Confused | :confused:

Here's the code ...

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.IO;

public partial class TaskEntry : System.Web.UI.Page
{
    //TODO: Update _DBConnString to read from web.config.
    private const string _DBConnString = "Data Source=JCAMILLERI\\SQLEXPRESS;Initial Catalog=teamwiki;User ID=teamwiki;Password=password;";
    private SqlConnection _conAppDB = new SqlConnection(_DBConnString);
    private enum multifunctionButtonFunction {Create, Update, NoUpdate}
    private int _selectedProduct = 0;

    protected void Page_Load(object sender, EventArgs e)
    {  
        //Binding Product 
        try
           
        {   
            //required because Autopostback is true.
            if (!IsPostBack) { 
                _conAppDB.Open();

                //populate Product     
                Product.Items.Clear();

                SqlCommand _getProductSQL = new SqlCommand
                    (@"select [productID_PK], [product] + ' (' + [product_shortname] + ')' as product
                from [teamwiki].[dbo].[product_L]
                where [in_use] = 1
                order by [product] ASC", _conAppDB);

                SqlDataReader _ProductNames = _getProductSQL.ExecuteReader();
                Product.DataSource = _ProductNames;
                Product.DataTextField = "product";
                Product.DataValueField = "productID_PK";
                Product.DataBind();

                _ProductNames.Close();

         }

        }
        catch (Exception ex) { 
            throw ex; }
        finally {
            if (_conAppDB.State == ConnectionState.Open)
            { _conAppDB.Close(); }
            
        }

  
    }

    protected void btnMultifunction_Click(object sender, EventArgs e)
    {
        multifunctionButtonFunction ButtonMode = multifunctionButtonFunction.Create;

        if (btnMultifunction.Text == "Create new task")
            //TODO: Use enums instead of text for validating btnMultifunction
        {
            Product.Enabled = true;
            calIdealDeliveryDate.Enabled = true;
            calLatestDeliveryDate.Enabled = true;
            txtRequestedBy.Enabled = true;
            lstTaskSubCategory.Enabled = true;
            txtTaskDescription.Enabled = true;
            lstPriority.Enabled = true;

            btnMultifunction.Text = "Save";
            ButtonMode = multifunctionButtonFunction.Update;
        }
        else if (btnMultifunction.Text == "Save") { 
            /* TODO: Insert new task in database and generate task_ref (last 6 digits)
                    show it in bold and ask user to take note of this reference.
             */
            Product.Enabled = false;
            ProductVersion.Visible = true; //TEMP
            ProductVersion.Enabled = false;
            calIdealDeliveryDate.Enabled = false;
            calLatestDeliveryDate.Enabled = false;
            txtRequestedBy.Enabled = false;
            lstTaskSubCategory.Enabled = false;
            txtTaskDescription.Enabled = false;
            lstPriority.Enabled = false;

            //Validation 1: Dates cannot be in the past.
            if (calIdealDeliveryDate.SelectedDate < DateTime.Now && ButtonMode == multifunctionButtonFunction.Update)
            {
                Response.Write("Dates cannot be in the past");
                ButtonMode = multifunctionButtonFunction.NoUpdate;
           
            }

            if (calLatestDeliveryDate.SelectedDate < DateTime.Now)
            {
                Response.Write("Date cannot be in the past");
                ButtonMode = multifunctionButtonFunction.NoUpdate;
                
            }

            //Insert to database and display task reference
            if (ButtonMode != multifunctionButtonFunction.NoUpdate) {
            try
            {
                _conAppDB.Open();
                
                string _createNewTaskQuery = (@"INSERT INTO [teamwiki].[dbo].[task]
                                        ([category_FK1]
                                       ,[sub_category_FK2]
                                       ,[task_description]
                                       ,[priority_FK3]
                                       ,[status_FK4]
                                       ,[start_date]
                                       ,[ideal_delivery_date]
                                       ,[latest_delivery_date]
                                       ,[task_deadline]
                                       ,[request_date]
                                       ,[requesting_user]
                                       ,[assigned_to]
                                       ,[managed_by]
                                       ,[implementor_notes]
                                       ,[attachment] 
                                       ,[last_update]
                                       ,[in_use]
                                       ,[productID_FK5]
                                       ,[product_release_FK6])
            VALUES                    ( @category, 
                                       @sub_category,
                                       @task_description,
                                       @priority,
                                       @status, 
                                       NULL,
                                       @ideal_delivery_date,
                                       @latest_delivery_date,
                                       NULL,
                                       GETDATE(),
                                       @requesting_user,
                                       NULL,
                                       NULL,
                                       NULL,
                                       NULL,
                                       GETDATE(),
                                       @in_use,
                                       @product,
                                       @product_release)");
                SqlCommand cmdCreateNewTaskQuery = new SqlCommand(_createNewTaskQuery, _conAppDB);
                                                            
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@category", Global.TaskCategory);   /*TODO: Currently hard-coded.  Should map to Global.TaskCategory i.e. the option
                                                                                                        that the user selected in Welcome.aspx. */
                 
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@sub_category", lstTaskSubCategory.SelectedValue); 
                      
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@task_description", txtTaskDescription.Text);

                //Int32.TryParse(lstPriority.SelectedValue.ToString(), out _priority);
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@priority", 1); //TODO:  Currently hard-coded; to retrieve selection from lstPriority.
                
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@status", 1); //1 - not started [dbo.task_status_L]              
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@ideal_delivery_date", calIdealDeliveryDate.SelectedDate);
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@latest_delivery_date", calLatestDeliveryDate.SelectedDate);
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@requesting_user", txtRequestedBy.Text);
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@in_use", 1); //Bit data type: 1 – true; 0 – false.

                //int _selectedProduct = int.Parse(Products.SelectedDataKey.Value.ToString());
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@product", 1); //TODO: Update to read values selected by user
                cmdCreateNewTaskQuery.Parameters.AddWithValue("@product_release", 1); //TODO: Update to read values selected by user
                //cmdCreateNewTaskQuery.Parameters.AddWithValue("@product", _selectedProduct); 
                

                cmdCreateNewTaskQuery.ExecuteNonQuery();

                //retrieve greatest taskRef to txtTaskRef
                string getTaskRef = @"SELECT MAX([taskID_PK]) FROM [teamwiki].[dbo].[task];";
                SqlCommand getTaskRefSQL = new SqlCommand(getTaskRef, _conAppDB);
                object taskRef = getTaskRefSQL.ExecuteScalar();
                if (taskRef != DBNull.Value)
                {
                    txtTaskRef.Text = taskRef.ToString();
                }
                
                btnMultifunction.Enabled = false;
                
            }
            catch (InvalidCastException)
            { 
                //Occurs when database is empty.
            }
            catch (Exception ex)
            {
                throw ex;
                
            }
            finally {
                _conAppDB.Close();
            }      
        } 
    } 
    }

    protected void lstPriority_SelectedIndexChanged(object sender, EventArgs e)
    {

    }
    protected void txtIdealDeliveryDate_TextChanged(object sender, EventArgs e)
    {
        
    }
    protected void calLatestDeliveryDate_SelectionChanged(object sender, EventArgs e)
    {

    }
    
    protected void Products_SelectedIndexChanged(object sender, EventArgs e)
    {
        //Assumption: When this is databound, a value has to be selected by the user
        //TODO:  Within error trapping test this assumption.

       if (ProductVersion.Visible == false){ 
            ProductVersion.Visible = true;
            ProductVersion.Enabled = true;
       
            //read Product selected by the user
            string _selectedProduct_s = Product.SelectedValue.ToString();

            if (int.TryParse(_selectedProduct_s, out _selectedProduct) == false)
            {
                //TODO: Error handling
                throw new Exception();
            }
           
            //populate ProductVersion
           try
            {              
     
                _conAppDB.Open();

                //Binding ProductVersion to read items
                ProductVersion.Items.Clear();
                SqlCommand _getProductVersionSQL = new SqlCommand
                    (@"select product_releaseID_PK, version
                from [teamwiki].[dbo].[product_release]
                where [in_use] = 1
                and productID_FK2 = @productID;", _conAppDB);

                _getProductVersionSQL.Parameters.AddWithValue("@productID", _selectedProduct);

                SqlDataReader _ProductVersion = _getProductVersionSQL.ExecuteReader();
                
                ProductVersion.DataSource = _ProductVersion;
                ProductVersion.DataTextField = "version";
                ProductVersion.DataValueField = "product_releaseID_PK";
                ProductVersion.DataBind();
                
               _ProductVersion.Close();
                    
            }
            catch (Exception ex) {
                throw ex;
            }
            finally {
                
                _conAppDB.Close();
            } 
            
        } 
                        
        }

    protected void ProductVersion_SelectedIndexChanged(object sender, EventArgs e)
    {

    }
}

Jon

Re: [newbie] Dropdownlist control disappearing

Vimalsoft(Pty) Ltd4-Feb-09 2:32

Vimalsoft(Pty) Ltd

4-Feb-09 2:32

So why do you post your whole code, noone is going to read this long thing, you should have shown us only the code in the button.

Vuyiswa Maseko,

Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswam@its.co.za

Re: [newbie] Dropdownlist control disappearing

jon-804-Feb-09 2:52

jon-80

4-Feb-09 2:52

I'm not sure where to look otherwise I would have posted the relevant snippets...I've gone through the code a couple of times, and, being human, spotted no logical flaws where I set explicit changes to Dropdownlist.Visible. The dropdownlist is initially set to Visible = false through the UI, but that shouldn't affect me.

When I give up I'll call a real programmer Smile | :)

Jon

Re: [newbie] Dropdownlist control disappearing

Not Active4-Feb-09 10:30

Not Active

4-Feb-09 10:30

jon_80 wrote:
When I give up I'll call a real programmer

I've looked at the code. Give up now; make the call.

only two letters away from being an asset

Serialize, then directly in DB

mehrdadc484-Feb-09 1:40

mehrdadc48

4-Feb-09 1:40

Hi.
I want to serialize an object, then insert it in DB without creating xml file.(just serialize and insert in DB)
Really, I couldn't find a way to serialize it without creatn an xml file. (that's my problem)

Best wishes

Re: Serialize, then directly in DB

Fayu4-Feb-09 10:05

Fayu

4-Feb-09 10:05

string outputText = string.Empty; //Will contain the serialized object text
List<string> strings = new List<string>(); //object to serialize
using (MemoryStream ms = new MemoryStream()) //memory stream will contain serialized object
{
    XmlSerializer s = new XmlSerializer(typeof(List<String>)); //Create serialize for object
    s.Serialize(ms, strings); //Seralize object into memory stream
    using (StreamReader sw = new StreamReader(ms)) //get stream reader
    {
        outputText = sw.ReadToEnd(); //Read the text in streamreader
    }
}

GridView

GomathiR4-Feb-09 1:38

GomathiR

4-Feb-09 1:38

I am developing shopping cart application. i am populating the selected row values in another datatable and binded it to another grid. I am havind a textbox in new grid. the value entered in the textbox got refreshed when a row is added to this grid. i used update panel also. any solution.............?

Re: GridView

sarang_k4-Feb-09 5:06

sarang_k

4-Feb-09 5:06

May be because of postback.

Re: GridView

GomathiR4-Feb-09 17:26

GomathiR

4-Feb-09 17:26

Hi thanks for ur reply.ya its because of postback only.But how to retain the value of text box. Confused | :confused:

Re: GridView

Jeneesh K. Velayudhan11-Jan-10 17:28

Jeneesh K. Velayudhan

11-Jan-10 17:28

EnableViewState ppty set to true for the txtbox/aspx

Thanks & Regards,
Jeneesh k. v.

Access ASP.NET application in LAN

avvaru.murali4-Feb-09 0:17

avvaru.murali

4-Feb-09 0:17

Hi,

I had a problem. I can access my ASP.NET application through localhost and also
through my IP in my system.
But I am unable to connect from other system which is in same LAN. I was able
to access before but now I am not able to access
from other system. Is there anything to set in my IIS? Pls help me regarding
this.
I tried and check with these options:
1,Iam able to ping (ASP.NET application running system) from other system..
2,I turn off windows firewalls on localhost--(windows xp)
3,while running application on localhost it's giving
url http://localhost:1310/abomp/HomePage.aspx
4,iam trying with http://192.168.0.36/abomp/HomePage.aspx --(another system)..
is there any wrong process..
Waiting for ur response.

murali krishna

Re: Access ASP.NET application in LAN

SeMartens4-Feb-09 0:34

SeMartens

4-Feb-09 0:34

Well you have to use the port 1310, since the app is not at the default port for http (80).

So for outside you have to use

http://192.168.0.36:1310/abomp/HomePage.aspx

Regards
Sebastian

It's not a bug, it's a feature!

Check out my CodeProject article Permission-by-aspect.

Me in Softwareland.

Last Visit: 31-Dec-99 18:00 Last Update: 1-May-24 13:28

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