Cant able to access the dropdonlist which dynamically created in gridview row

Question

0.00/5 (No votes)

See more:

I've created dynamic dropdownlist in gridview rowdatabound pls refer below code.

C#

DropDownList ddlResult = new DropDownList();
                    ddlResult.ID = "ddlResult";
                    ddlResult.AutoPostBack = true;
                    ddlResult.SelectedIndexChanged += ddlResult_SelectedIndexChanged; 
                    ddlResult.Items.Insert(0, new ListItem("PASS", "0"));
                    ddlResult.Items.Insert(1, new ListItem("FAIL", "1"));

I've a button below the gridview, when i click the button i wants to access and get the above dropdown selected value. like below code inside click event

C#

foreach (GridViewRow row in gvMark.Rows)
                {
DropDownList drpResult = (DropDownList)row.FindControl("ddlResult");

// Here "drpResult" i'm getting null

Result = drpResult.SelectedValue.ToString();

What I have tried:

C#

DropDownList ddlResult = new DropDownList();
                    ddlResult.ID = "ddlResult";
                    ddlResult.AutoPostBack = true;
                    ddlResult.SelectedIndexChanged += ddlResult_SelectedIndexChanged; 
                    ddlResult.Items.Insert(0, new ListItem("PASS", "0"));
                    ddlResult.Items.Insert(1, new ListItem("FAIL", "1"));

C#

foreach (GridViewRow row in gvMark.Rows)
                {
DropDownList drpResult = (DropDownList)row.FindControl("ddlResult");

// Here "drpResult" i'm getting null

Result = drpResult.SelectedValue.ToString();

Posted 6-Jun-16 5:25am

rajah rajah

Updated 6-Jun-16 5:34am

Add a Solution

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)

Wendelius · Answer 1 · 2016-06-06T05:34:00

Solution 1

As far as I can see you never add the DropDownList control in the row in the first place. Try adding the drop down list into the controls collection of the cell in GridView.RowCreated Event (System.Web.UI.WebControls)[^].

In other words

C#

e.Row.Cells[colnumber].Controls.Add(ddlResult);

Posted 6-Jun-16 5:34am

Wendelius

Comments

rajah rajah 6-Jun-16 23:32pm

Hi Mika,

Sorry i forgot to mention it.I have added the control like below

e.Row.Cells[i].Controls.Add(ddlResult);

I'm getting DDL in UI I just want to get the selected value of each row's DDL while clicking on button click event.Below code is inside the button click event

foreach (GridViewRow row in gvMark.Rows)
{
DropDownList drpResult = (DropDownList)row.FindControl("ddlResult");

// Here "drpResult" i'm getting null

Result = drpResult.SelectedValue.ToString();
}