Drop down in a gridview

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Hi. . .

How to find the drop down selected index changed event in a grid view ?

This is my sample code

<asp:Gridview runat="server" id="grid1">

<columns>

XML

<asp:TemplateField HeaderText="Number">

             <ItemTemplate>
               <asp:DropDownList   ID="dropColor" runat="server"   AutoPostBack="true" OnSelectedIndexChanged="DropColor_InGridview_SelectedIndexChangedEvent">

                 <asp:ListItem Text="Zero" Value="0"></asp:ListItem>
                 <asp:ListItem Text="One" Value="1"></asp:ListItem>
                 <asp:ListItem Text="Two" Value="2"></asp:ListItem>
                 <asp:ListItem Text="Three" Value="3"></asp:ListItem>

               </asp:DropDownList>
             </ItemTemplate>

In code behind i wrote like this

C#

protected void DropColor_InGridview_SelectedIndexChangedEvent(object s,EventArgs e)
   {
       Response.Write("Drop down fired");

   }

Posted 14-Oct-12 20:21pm

Samsani.v.s.Durga Prasad

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Prasad_Kulkarni · Answer 1 · 2012-10-14T20:40:00

First, make sure that EnableViewState of that GridView to false, and check if it works.

Refer following thread:
Raising DropDownList SelectedIndexChanged From GridView Control[^]

Here are some similar discussions on same:
DropDownList SelectedIndexChanged within Gridview[^]
Assign an event to a custom control[^]

Sumit_Kumar_Sinha · Answer 2 · 2012-10-14T20:30:00

protected void gvUserInfo_RowDataBound(object sender, GridViewRowEventArgs e)
{
DropDownList ddl = (DropDownList)gvUserInfo.FindControl("yourControlName");
string ddlValue = ddl.SelectedItem.Value;
}

OR (

XML

Suppose if we have controls in each row of gridview then we need find each row of controls for that we need to write a code like this

<pre lang="cs">protected void gvUserInfo_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
DropDownList ddl = (DropDownList)e.Row.FindControl(&quot;ddlCity&quot;);
int CountryId = Convert.ToInt32(ddl.SelectedItem);
}
}</pre>

)

Samsani.v.s.Durga Prasad · Answer 3 · 2012-10-14T20:39:00

Solution 2

Yes Sumit i have written like this but every time i am getting "zero" what is the
solution can you help me ?

Posted 14-Oct-12 20:39pm

Samsani.v.s.Durga Prasad

Samsani.v.s.Durga Prasad · Answer 4 · 2012-10-14T20:48:00

Solution 4

hi kulkarni by putting enableviewstate=false drop down is firing

Posted 14-Oct-12 20:48pm

Samsani.v.s.Durga Prasad

Comments

Prasad_Kulkarni 15-Oct-12 2:52am

Well, that's great. So what next?

Divya RS · Answer 5 · 2012-10-14T21:07:00

Solution 5

You can achieve this by setting AuotoPostback Property to true

Posted 14-Oct-12 21:07pm

Divya RS

Drop down in a gridview

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