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may be try like this:<br />
DropDownList ddl = (DropDownList)this.FindCon<wbr />trol(&quot;ddlS<wbr />tate&quot;);<br />
ControlParameter stateIDParam = new ControlParameter();<br />
stateIDParam.ControlID = ddl.ClientID;<br />
<br />
not tested but try and see if that works..
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may be try like this:
DropDownList ddl = (DropDownList)this.FindControl("ddlState");
ControlParameter stateIDParam = new ControlParameter();
stateIDParam.ControlID = ddl.ClientID;

not tested but try and see if that works..

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<div class="content wysiwyg-content">
Hi,<br />
<br />
I have the code-behind below that's working just fine when I use it in regular aspx page, but once I put the dropdownlist control &quot;ddlState&quot; in a content page of a master page, it starts giving an error &nbsp;&quot;Could not find control 'ctl00_secondPageContent_d<wbr />dlState' in ControlParameter 'state_id'.&quot;, where &quot;secondPageContent&quot; is the ID of the contentplaceholder containing the dropdownlist &quot;ddlState&quot;. &nbsp;Can someone tell me how to fix this?<br />
<br />
Thanks.<br />

<pre><code id="code-359350">odsLocs.SelectMethod = &quot;SelectOfficeByState&quot;;
            ControlParameter stateIDParam = new ControlParameter();
            stateIDParam.ControlID = &quot;ddlState&quot;;
            stateIDParam.Name = &quot;state_id&quot;;
            stateIDParam.PropertyName = &quot;SelectedValue&quot;;
            odsLocs.SelectParameters.Clear();
            odsLocs.SelectParameters.Add(stateIDParam);
            dlLocations.Caption = captionText + &quot;&lt;br /&gt;&lt;br /&gt;Offices in State:&quot;;
            dlLocations.DataSource = odsLocs.Select();
            dlLocations.DataBind();
</code></pre>
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Hi,

I have the code-behind below that's working just fine when I use it in regular aspx page, but once I put the dropdownlist control "ddlState" in a content page of a master page, it starts giving an error  "Could not find control 'ctl00_secondPageContent_ddlState' in ControlParameter 'state_id'.", where "secondPageContent" is the ID of the contentplaceholder containing the dropdownlist "ddlState".  Can someone tell me how to fix this?

Thanks.

need help on ControlID

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).