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ctypesdatalistitem

DataListItem to DropDownList or TextBox VB.Net

I have a DataListItem which can potentially be a dropdownlist or a textbox. To get the value I would need to do:

 CType(item.FindControl("myControl"), TextBox).Text

Or

CType(item.FindControl("myControl"), DropDownList).SelectedValue.ToString()

The problem is, if it's a dropdownlist I get..

Unable to cast object of type 'System.Web.UI.WebControls.DropDownList' to type 'System.Web.UI.WebControls.TextBox'.

Is there a way to check if the CType will take before Ctyping it?

Solution

  • Use TryCast:

    Dim txt as TextBox = TryCast(item.FindControl("myControl"), TextBox)
If txt Is Nothing Then
    TryCast(item.FindControl("myControl"), DropDownList)
End If