Promlem with adding a blank row.

[Andy Green]

Hi

This is my code to bind data to a RadComboBox:

With ddlFutureCode
.Items.Clear()
.Items.Add(New RadComboBoxItem("", 0))
.DataSource = l_ds.Tables(1)
.DataTextField = "Name"
.DataValueField = "Value"
.DataBind()
End With

 

It works fine, and places a blank row at the top if no selection is to be made. However:

With this code )setting a default tot blank row disappears so if the default value isn't required ist not possible to select a blank row.

With ddlFutureCode
 .Items.Clear()
.Items.Add(New RadComboBoxItem("", 0))
.DataSource = l_ds.Tables(1)
.DataTextField = "Name"
.DataValueField = "Value"
.DataBind()

End With
ddlFutureCode.SelectedItem.Text = FutureCode

 Andy

 

 

[Aneliya Petkova]

Hi Andy,

Please try the sample page I attached to this thread and modify it in order to show me the issue you are facing, because I am not sure I understand you correctly. Here you may find a video demonstrating how the RadComboBox is behaving at my side.

Regards,
Aneliya Petkova
Telerik

[Andy Green]

Hi Aneliya

If you change your code to match this you will see the problem:

With ddlFutureCode
.Items.Clear()
.Items.Add(New RadComboBoxItem("", 0))
.Items.Add(New RadComboBoxItem("1", 1))
.Items.Add(New RadComboBoxItem("FutureCode", 2))
.DataBind()
End With
'ddlFutureCode.SelectedIndex = 2
ddlFutureCode.SelectedItem.Text = "FutureCode"

form1.Controls.Add(ddlFutureCode)

I'm not using Selected Index as I wont know the index values of the required field in the dataset.

Andy

 

[Aneliya Petkova]

Hi Andy,

Could you please explain in more details what exactly you need to achieve, because I am still not sure I understand you correctly?

Please note that when you are using the code below, you are overriding the Text of the Selected Item - in your case this is the first item in the RadCombomboBox(with the empty text):

ddlFutureCode.SelectedItem.Text = "FutureCode"

If you want to select an item from the RadComboBox by its Text, you can use the following code instead:

ddlFutureCode.FindItemByText("FutureCode").Selected = True

So the changed VB code should look like the following:

Dim ddlFutureCode As New RadComboBox

With ddlFutureCode
    .Items.Clear()
    .Items.Add(New RadComboBoxItem("", 0))
    .Items.Add(New RadComboBoxItem("1", 1))
    .Items.Add(New RadComboBoxItem("FutureCode", 2))
    .DataBind()
End With

ddlFutureCode.FindItemByText("FutureCode").Selected = True

form1.Controls.Add(ddlFutureCode)

Regards,
Aneliya Petkova
Telerik

[Andy Green]

Thanks Aneliya

This is what I was missing:

ddlFutureCode.FindItemByText("FutureCode").Selected = True

Andy