Does anyone have an example of how to use a MultiColumnComboBox with RadControls for WinForms 2010 Q2?  I can't seem to find an example in the demos that came with it and I'm not able to get it working.  My code is posted below.  Basically my grid (the comboelement if I'm reading correctly) never displays.  The first value in the datatable displays in the text box but no grid shows up.  I can press the down arrow and the value changes but still never displays.  Can anyone help me?

 

 

 

//set up data

 

 

 

Data objData = new Data();

 

 

DataTable dtCarriers = objData.GetCarriers();

 

bindingSource1.DataSource = dtCarriers;

 

 

//setup drop down grid display options

 

rmccbCarrier.AutoSizeDropDownToBestFit =

true;

 

rmccbCarrier.DisplayMember =

"CARRIER_CODE";

 

 

RadMultiColumnComboBoxElement multiColumnComboElement = this.rmccbCarrier.MultiColumnComboBoxElement;

 

multiColumnComboElement.DropDownSizingMode =

SizingMode.UpDownAndRightBottom;

 

multiColumnComboElement.DropDownMinSize =

new Size(420, 300);

 

 

this.rmccbCarrier.MultiColumnComboBoxElement.AutoCompleteMode = AutoCompleteMode.None;

 

 

this.rmccbCarrier.DropDownStyle = RadDropDownStyle.DropDown;

 

 

FilterDescriptor descriptor = new FilterDescriptor(this.rmccbCarrier.DisplayMember, FilterOperator.StartsWith, string.Empty);

 

 

this.rmccbCarrier.EditorControl.FilterDescriptors.Add(descriptor);

 

 

this.rmccbCarrier.DropDownStyle = RadDropDownStyle.DropDown;

 

rmccbCarrier.AutoFilter =

true;

 

rmccbCarrier.MultiColumnComboBoxElement.AutoCompleteMode =

AutoCompleteMode.None;

 

Hello Dennis,

You can read more about the RadMultiColumnComboBox in the online documentation. In addition, you can take a look at the RadMultiColumnComboBox example in the Examples application supplied with RadControls for Winforms.

Kind regards,
Svett
the Telerik team

I faced the same problem and found that I have to set the IsFilterEditor = true for the filter to work.

Regards,
MP

Hello MP,

Yes, your are right. If you want to make a concrete filter to appear in the filter cell, you should set the IsFilterEditor property to true.

We are working on updating the documentation of RadGridView. It will be available in the upcoming Q3 2010. 

All the best,
Svett
the Telerik team