asp.net webcontrols: Problem in Setting SelectedValue for DropdownList in Form -- asp.net webcontrols

Problem in Setting SelectedValue for DropdownList in Form

Charleees
12/29/2005 8:38:00 PM

asp.net webcontrols: Hi all,
I have a Problem in Setting the Dropdown selected value.

I have a Page where i get the input for the number of rows and columns
and generate a dynamic table on another page ie) table page.
If i select edit button in table page , the page is redirected to Input
page .
In the input page i have a panel where i have 6 dropdown, which
indicates the Colspan and Rowspan Cordinates and number of Rows and Col
Spaans.
The problem is when i click the edit button, i have to set the selected
value of these dropdowns to some values ie) the table properties .
If the tables row is 3 and Column is 4 , i have to set the row_ddl to 3
and also column_ddl to 4.

I assidn the selected value for these dropdowns as

ddl.selectedvalue = "value"

when i debug , i was getting the right values in the line , but thses
changes are not reflected in the Form.
I am filling the Ddl in Pageload and only if !(page.Ispostback).

Can any one help me please..........

Thanks in advance

RE: Problem in Setting SelectedValue for DropdownList in Form

Phillip Williams
12/29/2005 8:51:01 PM

Whatever changes to the dropdownlist that you did during the Page_Load will
be lost if the dropdownlist is databound to a datasource. You should set the
selected value of the dropdownlist during the DataBound event.

void column_dll_DataBound(object sender, EventArgs e)
{
//set here the selectedvalue
ListItem li = ((DropDownList)sender).Items.FindByValue("4");
if (li != null) //item was found that has the selected value
{
((DropDownList)sender).ClearSelection(); //clear the old
selection first
li.Selected = true; //set the new selection
}
}
--
HTH,
Phillip Williams
http://www.societopia.net
http://www.webswapp.com

[quoted text, click to view]

Re: Problem in Setting SelectedValue for DropdownList in Form

Charleees
12/30/2005 5:43:07 AM

hi

i dont have to do anything like databound
i have just 10 values in my dropdown and i have to set according to the
variables values i assign

if i tell 2 then the selected value should be to 1

if i do this i could not set the value i selected

i get some defaults

what should i do

when i assign i get right values ( i checked in debug mode)

please help

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