 Re: Why does FindControl not work in my sample ASP
.NET 3.5 ListView with DropDownList?
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Udmonto Oorpoi |
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5/7/2008 10:28:11 PM |
The intuitional attempt was the following: <InsertItemTemplate>
<tr style="">
<td>
<asp:TextBox ID="NameTextBox"
runat="server"
Text='<%# Bind("Name") %>'
/>
</td>
<td>
<asp:DropDownList ID="ddlContinent"
runat="server"
DataSourceID="ldsContinents"
DataTextField="Name"
DataValueField="Id"
SelectedValue='<%# Bind("ContinentId") %>'/>
</td>
<td>
<asp:Button ID="InsertButton"
runat="server"
CommandName="Insert"
Text="Insert"
/>
<asp:Button ID="CancelButton"
runat="server"
CommandName="Cancel"
Text="Clear"
/>
</td>
</tr>
</InsertItemTemplate> But this results in the error "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control". The only solution I found was, not to bind the DropDownList and store the value in the ItemInserting event of the ListView: protected void lvCountries_ItemInserting(object sender, ListViewInsertEventArgs e)
{
// TODO: FindControl does not find the DropDownList??
// DropDownList ddlContinent = (DropDownList)this.lvCountries.FindControl("ddlContinent");
// HACK: Find the DropDownList using a search method
DropDownList ddlContinent = (DropDownList)this.Find(this.lvCountries, "ddlContinent");
// Store the continent ID
e.Values["ContinentId"] = (Convert.ToInt32(ddlContinent.SelectedValue));
}
private Control Find(Control control, string id)
{
if (control.ID == id)
{
return control;
}
foreach (Control child in control.Controls)
{
Control result = this.Find(child, id);
if (result != null)
{
return result;
}
}
return null;
}
Any other suggestions? And: Why does FindControl not work in my sample?
Post Comments |
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Re: Why does FindControl not work in my sample ASP
.NET 3.5 ListView with DropDownList? |
Xhestom Keith |
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5/7/2008 10:29:24 PM |
Hi:
Any other suggestions?
No. And: Why does FindControl not work in my sample?
Please try: protected void lvCountries_ItemInserting(object sender, ListViewInsertEventArgs e)
{
DropDownList ddl = e.Item.FindControl("ddlContinent") as DropDownList;
if (ddl != null)
{ e.Values["ContinentId"] = (Convert.ToInt32(ddl.SelectedValue));
}
}
If it still doesn't work, please inform us. Regards
Post Comments |
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Re: Why does FindControl not work in my sample ASP
.NET 3.5 ListView with DropDownList? |
Jorgia Carranza |
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5/7/2008 10:29:51 PM |
Just stumbled across this issue. I take it this is a bug in ListView? Is a fix forthcoming from Microsoft? I'll need to do this on a routine basis - I guess for now I should just extend ListView to correct this behavior?
Post Comments |
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Re: Why does FindControl not work in my sample ASP
.NET 3.5 ListView with DropDownList? |
Jai Dev Dhabliwala |
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5/7/2008 10:30:15 PM |
Hi, is there anything new on this issue?
I'm quite disappointed that this stuff is not working properly,
Thanks,
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