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Trouble setting Text property of ComboBox (seems so simple!)

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ComboBox
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Jesse Lawler
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Jesse Lawler asked on 13 May 2010, 06:21 PM
Okay, so I've got a ComboBox that contains a RadTreeView, very similar to the Telerik demo.  Neat functionality.  However, when I'm first loading the page, I naturally want to set both the state of the embedded RadTreeView control and the RadComboBox itself.

In the snippet of code pasted below, you can see how I'm doing this.  (This is all from the Code-Behind.)  The name of the RadComboBox is "WebsiteDocumentationParent," and as you can see in the final line, I'm setting it's .Text property value to be the same as the .Text property of the node that's been selected in the embedded RadTreeView.

The code runs fine, no errors are generated.  However, on the browser the default EmptyMessage always displays.  What could be going on to cause this?

                if (reader.Read())
                {
                    WebsiteDocumentationID.Value = Convert.ToString(reader["webdocID"]);
                    WebsiteDocumentationPageTitle.Text = Convert.ToString(reader["webdocPageTitle"]);
                    WebsiteDocumentationFileEditor.Content = Convert.ToString(reader["webdocContent"]);
                    WebsiteDocumentationParentID.Value = parentID = reader["webdocParentID"].ToString();
                    WebsiteDocumentationParent.Text = ""; // by default empty out the Parent name
                    if (parentID != "")
                    {
                        RadTreeView RadTreeView2 = (RadTreeView)WebsiteDocumentationParent.Items[0].FindControl("RadTreeView2");
                        RadTreeNode foundNode = RadTreeView2.FindNodeByValue(parentID);
                        if (foundNode != null)
                        {
                            foundNode.Selected = true;
                        }
                        WebsiteDocumentationParent.Text = foundNode.Text;
                    }

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Simon
Telerik team
answered on 14 May 2010, 02:25 PM
Hello Jesse Lawler,

You can avoid this by selecting the only Item of the RadComboBox and use its Text property for the same purpose. In this way you will have a selected Item and because of this, its Text will be shown in the input. Otherwise RCB considers itself 'empty' and shows its Empty Message.

Greetings,
Simon
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Jesse Lawler
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answered on 14 May 2010, 07:47 PM
Thanks!  (I knew it was going to be something that'd make me slap myself in the forehead.)
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Simon
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Jesse Lawler
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