how to set the vale in Drop down in gridview template Colums

Question

0.00/5 (No votes)

See more:

I am Using Gridview with templete Field of DropDown
at RowdtatBound I Use a function which returns datatable and I bind it with
template column of DropDown.

After that when i try to select the value in templete Field of DropDown
It gives me error of

"Object reference not set to an instance of an object."

although the data which i try to set in dropdown its present becuase first i
populate the dropdown and then set the value by using

SQL

gvReading_ddlgv.Items.FindByValue(strLastReading).Selected = True

Whts the problem Need Help !!!

Posted 18-Feb-11 0:43am

qasimidl

Add a Solution

Comments

NMehta83 18-Feb-11 7:04am

in each postback event you need to first bind the data to the grid and then you can select your item in the dropdown. Can you share your code of aspx page and aspx.cs page?

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Ashishmau · Answer 1 · 2011-02-18T00:56:00

simply,

manually write dropdown selectindexchanged event in sourcefile and .cs file and set autopostback=true.then in selectedindexchanged event use sender object to retreive combobox selectedindex and text and use dropdownlist clientid to get selected row like

DropDownList ddl = (DropDownList)sender;
string s = ddl.ClientID;//use substring to retreive rowindex
if (ddl.SelectedItem.Text == "Your selected text"){dropdown1.Items.FindByText("Your text"].ToString()).Selected=true;}