my drop downlist value not loade into my text box

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i want to post my drop down list value into the text box i binded the dropdownlist items using the sqlsource i am performing a three way selection after the third binding using sql source i want to show the value in the text box but the selection event is not firing the code for posting drop downlist value to the text box is

C#

protected void DropDownList3_SelectedIndexChanged(object sender, EventArgs e)
        {
            txtUrl.Text = DropDownList3.SelectedValue;
            
        }

i tried in the other way also like

C#

protected void DropDownList3_SelectedIndexChanged(object sender, EventArgs e)
        {
           
            txtUrl.Text = DropDownList3.SelectedItem.Value;
            
        }

Posted 12-Mar-14 4:52am

sivateja donthukurthi

Updated 12-Mar-14 4:53am

v2

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AndrewCharlz · Answer 1 · 2014-03-12T04:54:00

Solution 1

Try this
DropDownList3 Autopostback = true
if it does not work send the source

Posted 12-Mar-14 4:54am

AndrewCharlz

Updated 12-Mar-14 4:55am

v2

anil pathak · Answer 2 · 2014-03-12T04:56:00

Solution 2

Hi,

Please on the AutoPostBack Property True for dropdownlist. But Your dropdownlist Binding code come in IsPostBack==false on PageLoad event.

Thanks

Posted 12-Mar-14 4:56am

anil pathak

Krunal Rohit · Answer 3 · 2014-03-12T04:59:00

Solution 3

Give it a try, (I might be wrong)

C#

protected void DropDownList3_SelectedIndexChanged(object sender, EventArgs e)
        {
            if(!IsPostBack)
                txtUrl.Text = DropDownList3.SelectedValue;
            
        }

-KR

Posted 12-Mar-14 4:59am

Krunal Rohit