ASP.NET

11-Sep-06 1:35

how to write DropDownList1_SelectedIndexChanged() method fro dropdownlist which is inside datagrid.

Pradeep Reddy

_AK_11-Sep-06 1:42

11-Sep-06 1:42

What you can do is put the name there in the html part of the dropdownlist(inside the datagrid) at "OnSelectedIndexChanged" and then define it in the code behind. Don't forget to make autopostback property to true.

BTW please use a better subject line. Smile | :)

Best Regards,
Apurva Kaushal

pradeep kumarappagari11-Sep-06 1:51

11-Sep-06 1:51

public void ddl3(object sender,System.EventArgs e)
{
calculate1();

}

iam using name ddl3 in inlinecode

public void calculate1()
{
TextBox tb1,tb2;
DropDownList dl1,dl2;
tb1=(TextBox)DataGrid1.FindControl("TextBox3");
tb2=(TextBox)DataGrid1.FindControl("TextBox4");
dl1=(DropDownList)DataGrid1.FindControl("DropDownList3");
dl2=(DropDownList)DataGrid1.FindControl("DropDownList4");

tb1.Text=dl2.SelectedValue;
int a=int.Parse(dl1.SelectedValue);
int b=int.Parse(dl2.SelectedValue);
int c=a/b;
tb2.Text=c.ToString();

}

this is giving error

Pradeep Reddy

_AK_11-Sep-06 1:52

11-Sep-06 1:52

What error?

Best Regards,
Apurva Kaushal

pradeep kumarappagari11-Sep-06 1:59

11-Sep-06 1:59

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.

Pradeep Reddy

_AK_11-Sep-06 2:01

11-Sep-06 2:01

you try accessing the dropdownlist like this in the event:
DropDownList list = (DropDownList)sender

and then use it.

Best Regards,
Apurva Kaushal

pradeep kumarappagari11-Sep-06 2:08

11-Sep-06 2:08

sir can u plz explain me little bit clearly this

Pradeep Reddy

_AK_11-Sep-06 2:13

11-Sep-06 2:13

Actually why you were getting the error because you were not been able to get the control and then was using it that why you getting that object reference.. error.
In you event just set the reference for the dropdownlist and check whether it works or not.
suppose this your method:
public void Test(object sender, System.EventArgs e)
{

DropDownList list = (DropDownList)sender;
string hh = list.SelectedItem.ToString(); //to get the selected string.

}

Best Regards,
Apurva Kaushal

pradeep kumarappagari11-Sep-06 2:29

11-Sep-06 2:29

thank u sir, i got it

Pradeep Reddy

_AK_11-Sep-06 2:31

Re: neel help plz... [modified]

11-Sep-06 2:31

always welcome.. Smile | :)

BTW one more thing don't call me sir, apurva will be ok. Smile | :)

Best Regards,
Apurva Kaushal

pradeep kumarappagari11-Sep-06 8:10

11-Sep-06 8:10

public void aa(object sender,System.EventArgs e)
{
DropDownList dl=(DropDownList)sender;
ss=dl.SelectedValue.ToString();----->this is working fine
TextBox tb=(TextBox)DataGrid1.FindControl("TextBox1");
tb.Text=ss;------->this is giving error

}

-- modified at 1:13 Tuesday 12th September, 2006

Pradeep Reddy

_AK_11-Sep-06 19:37

11-Sep-06 19:37

You can't get the textbox(which is inside the datagrid) like this. You need to have the find the index and then to find the control.
Probably first get the datagrid item like this:

TableCell cell = list.Parent as TableCell;<br />
DataGridItem item = cell.Parent as DataGridItem;

then you try to find the textbox control in it.

Best Regards,
Apurva Kaushal

pradeep kumarappagari11-Sep-06 21:30

11-Sep-06 21:30

TextBox tb1,tb2;
DropDownList dl1,dl2;
dl1=(DropDownList)sender;
string ss=dl1.SelectedValue.ToString();
tb1=(TextBox)DataGrid1.Items[0](i was missing this).FindControl("TextBox3");
tb1.Text=ss;

thank u i got the solution

Pradeep Reddy

_AK_11-Sep-06 21:35

11-Sep-06 21:35

Best Regards,
Apurva Kaushal

Amit Kumar Chikara11-Sep-06 1:46

Amit Kumar Chikara

11-Sep-06 1:46

If I am not wrong, you have added this drop down in the edit Item template of Datagrid. What you can do is, You can go to the HTML source code and where there you have added this Edit Item Template you can add an event for dropdown in the HTML code itself.

<asp:dropdownlist id="DropDownList1" onselectedindexchanged="DropDownList1_SelectedIndexChanged" runat="server">

Regards,

Amit Kumar
HDISM, PGDCA, MCP, MCAD, MCSD
amit_chikara2002@hotmail.com

pradeep kumarappagari11-Sep-06 1:57

Re: "Event in Java Script"

11-Sep-06 1:57

yes your right i added dropdownlist in edit item template.

how to add event i dont know plz tyell me the syntax

Pradeep Reddy

"Event in Java Script"

SysJey11-Sep-06 1:07

SysJey

11-Sep-06 1:07

How to invoke the event in java script for submit button even though the button was disabled.

Jey

Guffa11-Sep-06 1:45

Guffa

11-Sep-06 1:45

You can't activate a button that is disabled. You have to enable it first.

If you just want to post the form, you can use the submit method on the form.

---
b { font-weight: normal; }

What`s AJAX exactly ? Please refer me to Better References. . .

Hussein Madani Ghomi11-Sep-06 1:06

Hussein Madani Ghomi

11-Sep-06 1:06

Hi Dear Friends ,
We want to learn Ajax , but first we want to now what it is exactly .
If Ajax is a new method in asp.net 2.0 programming or it is some controls or .DLL for using in web pages (VisualStudio .net 2005 VB) that we must register.
Please Introduce good refrences about these topics.

ATTENTION :
PLEASE DON`T ANSWER ME ------ Mad | :mad:

CIWIZO --------

Thank you so much

Best Regards
Hussein Madani Ghomi
- h_madani_gh@yahoo.com
- Madani@SatrapTeam.ir
(+98-912-5577-832)

Re: What`s AJAX exactly ? Please refer me to Better References. . .

Sathesh Sakthivel11-Sep-06 1:35

Sathesh Sakthivel

11-Sep-06 1:35

Hi Hussein,

[^]

hope it will be easy to know about ajax.

With Regards

Satips

Parser Error Message: Ambiguous match found. [modified]

Praveen_S11-Sep-06 1:04

Praveen_S

11-Sep-06 1:04

Hi All,

I have developed an application using ASP.Net 2003 with .Net Framework 1.1.
But when i test application on .NetFramework 2.0 some pages crashes showing

Parser Error Message: Ambiguous match found.

Source Error:

Line 1: <%@ Page language="c#" Codebehind="ChangePassword.aspx.cs" AutoEventWireup="false" Inherits="TestApp.ChangePassword" %>
Line 2:
Line 3:

What could be the problem?

Praveen

-- modified at 2:59 Friday 6th October, 2006

Re: Parser Error Message: Ambiguous match found.

minhpc_bk11-Sep-06 6:41

minhpc_bk

11-Sep-06 6:41

There is also a built-in control ChangePassword in the ASP.NET 2.0, you may consider replace it with another name, and the Codebehind attribute is depricated in the version 2.0.

Nested repeaters Paging problem

MalikRizwan11-Sep-06 0:47

MalikRizwan

11-Sep-06 0:47

I have 2 Repeaters with ProductCategory and ProductDetail Architecture..
i.e master detail

Wot i want to do is ... enable the paging as a whole rather than ProductCategory or ProductDetail .. Here is sample code for it

strSQL = "SELECT   ProductID, ShortDesc, LongDesc, SubCategoryID, PictureUrl, ProductCatID, DataSheetUrl " & _<br />
         " FROM  dbo.Products ORDER BY ProductID"<br />
'& Request.QueryString("subid")<br />
strSqlMain = "SELECT  ProductCatID, Description, SubCategoryID FROM dbo.ProductCategory Where SubCategoryID=" & Request.QueryString("subid")<br />
clsCon.MakeDataSet(strSQL, dsProduct)<br />
clsCon.MakeDataSet(strSqlMain, ds)<br />
ds.Tables(0).TableName = "Main"<br />
ds.Tables.Add(dsProduct.Tables(0).Copy())<br />
ds.Tables(1).TableName = "Products"<br />
Dim str1(0) As String<br />
Dim str2(0) As String<br />
Dim dr As DataRelation = New DataRelation("ProductCat", ds.Tables("Main").Columns("ProductCatID"), ds.Tables("Products").Columns("ProductCatID"), False)<br />
ds.Relations.Add(dr)<br />
rptCategory.DataSource = ds<br />
rptCategory.DataBind()<br />
clsCon.sqlConnection.Close()

And the ItemDataBound Event of Master Repeater is

Protected Sub BindChild(ByVal source As System.Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs)<br />
        If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then<br />
            If (CType(e.Item.DataItem, DataRowView).CreateChildView("ProductCat")).Count > 0 Then<br />
                Dim rpt As Repeater = e.Item.Controls(3)<br />
                Dim dsPaged As New PagedDataSource<br />
                dsPaged.DataSource = (CType(e.Item.DataItem, DataRowView).CreateChildView("ProductCat"))<br />
                dsPaged.AllowPaging = True<br />
                dsPaged.PageSize = 7<br />
                dsPaged.CurrentPageIndex = CurrentPage<br />
                lblCurrent.Text = "Page: " & (CurrentPage + 1).ToString & " of " & _<br />
                dsPaged.PageCount.ToString<br />
                lblPrevious.Enabled = Not dsPaged.IsFirstPage<br />
                lblNext.Enabled = Not dsPaged.IsLastPage<br />
                rpt.DataSource = dsPaged<br />
                rpt.DataBind()<br />
            End If<br />
        End If<br />
    End Sub

now problem is It makes the Paging enable on Product Repeater meanz .. if i have a Categories like CAT-A CAT-B,CAT-C
and all of these categories has 10 items each .. then paging will work as
first page will populate with 7 records of A,B,C, each .. and on pressing Next link it will show rest of records of each category ..
eg

CAT-A
a
b
c
d
e
f
g
CAT-B
ba
bb
bc
|
|
bg
|
|
|
so on
on next page
CAT-A
h
i
j
CAT-B
bh
bi
bj
|
|
|
so on

but i want it to work as
First Page should show CAT-A with 7 records
on pressing next it should show Rest of 3 records for CAT-A and ultimately start CAT-B with 5 records and so on ..
LIKE

CAT-A
a
b
c
d
e
f
g

on next page
h
i
j
CAT-B
ba
bb
bc
bd

Cry | :((

R A M

fetch data from sql

senthilmca11-Sep-06 0:28

senthilmca

11-Sep-06 0:28

hi this is senthil from chennai i want know how to fetch top 3 rank in our students database

senthil

Re: fetch data from sql

_AK_11-Sep-06 0:35