Binding CompboBox after form has loaded

I have a situation whereby my form loads and populates comboBox1 which works fine. However, when the user selects a value from comboBox1 I want to populate comboBox2 with values based on the selection but can't seem to get it to work:

Here is my event handler for the first comboBox.

private void comboBoxTargetProduct_SelectedIndexChanged(object sender, System.EventArgs e)
{
string product = comboBoxTargetProduct.SelectedText.ToString();

switch(product)
{
case "Product1":
{
comboBoxExtensionType.DataSource = Enum.GetNames(typeof(CreativeNRG.ProductType));
this.Refresh();
break;
}
}
}

If it was a web based form then I would simply call the DataBind method but this does not appear to be available in the windows forms environment.

Thanks in advance for your help.

Simon

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Binding CompboBox after form has loaded

Steven Hemingray - MSFT
what error/s do you recieve if there is....
Allighator
ahh Binding to an array.

to triggerit maybe you need to set datasource to nothing and then to this array.

Try that.
Drew Speedie
It refreshes the internals, personally I wouldn't have done it like that but that's what I have found to work. Never heard an exact reason why but I suspect that setting it to null resets something inside.
dehran ph
Doesn't look like you are setting a display member.

Are you sure there are values getting populated
bewA
Excellent - that worked a treat - thanks.
Just so I know, can you explain why I need to set the datasource to null first

Thanks again.

Simon
mjcs100
If I simply add the following to the form load method, the control loads and populates itself without a problem, without setting a display member:

comboBoxExtensionType.DataSource = Enum.GetNames(typeof(CreativeNRG.ProductType));

However, I know little about what this display member property does, what value would I set it to

Thanks for your help.

Simon
dr.thomas
No error just nothing happens !
Binding CompboBox after form has loaded

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