How to call Drop down list selection Change event in User Contol in C#

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Hi,
This is Chandra
I have one query. I have an ASPX page. In that i have one drop down list. This Drop down list is performing some operations. Now i have an User Control which has one Radio button. My problem is how can i call Drop down list Selection change event in Radio Button List Selection Change event to perform same operations.
Can any one suggest me for the above query.

Thanks
Chandra

Posted 5-Dec-12 6:14am

ChandrakanthGaddam

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farham_heidari 5-Dec-12 12:56pm

hi a part of code can help me to understand what you need ?

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Sk. **Tajbir** · Answer 1 · 2012-12-05T07:28:00

Suppose here is a DropDownList in aspx page:

ASP.NET

<asp:dropdownlist id="ddlTest" runat="server">
   <asp:listitem>Food</asp:listitem>
   <asp:listitem>Clothes</asp:listitem>
</asp:dropdownlist>

Now from your user control you'll get the above DropDownList by writing this following code:

C#

DropDownList ddlTest = (DropDownList)this.Parent.FindControl("ddlTest");

Now you can do anything with this DropDownList which is in your aspx page.

I hope this will help.
Thanks.

Akbar Ali Hussain · Answer 2 · 2012-12-05T07:34:00

What I understood is you have to execute same code block on DropDownList selection change event and on RadioButtonList selection change event. If this is true, use either one of the following solutions.

Solution 1:
Move the code from DropDownList event to a common method and call this method from both DropdownList and RadioButtonList selection changed event

Solutions 2:
Use the selectedIndexChanged event of DropDownList for RadioButtonList also. Here the event name "DropDownList1_SelectedIndexChanged" assigned for Radiobuttonlist as well.

XML

<asp:DropDownList ID="DropDownList1" runat="server"
           onselectedindexchanged="DropDownList1_SelectedIndexChanged">
           <asp:ListItem>Test1</asp:ListItem>
           <asp:ListItem>Test2</asp:ListItem>
       </asp:DropDownList>

       <asp:RadioButtonList ID="RadioButtonList1" runat="server"
           onselectedindexchanged="DropDownList1_SelectedIndexChanged">
           <asp:ListItem>test11</asp:ListItem>
           <asp:ListItem>Test22</asp:ListItem>
       </asp:RadioButtonList>

How to call Drop down list selection Change event in User Contol in C#

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