Hello Steven,
Thank you for contacting Telerik Support.
In order to achieve your goal, it is necessary to implement custom
GridDataRowBehavior and change the default behavior for the
ProcessDeleteKey method as follows:
public Form1()
{
InitializeComponent();
List<Status> statuses = new List<Status>()
{
new Status(1,"Not done"),
new Status(2,"Done"),
new Status(3,"In progress"),
new Status(4,"Ready for test"),
};
Random rand = new Random();
List<GridItem> dataSource = new List<GridItem>();
for (int i = 0; i < 5; i++)
{
dataSource.Add(new GridItem(i,"Name" + i,statuses[rand.Next(0, statuses.Count)].Title));
}
GridViewDecimalColumn decimalColumn = new GridViewDecimalColumn("Id");
radGridView1.MasterTemplate.Columns.Add(decimalColumn);
GridViewTextBoxColumn textBoxColumn = new GridViewTextBoxColumn("Name");
radGridView1.MasterTemplate.Columns.Add(textBoxColumn);
GridViewComboBoxColumn statusColumn = new GridViewComboBoxColumn("CurrentStatus");
statusColumn.DataSource = statuses;
statusColumn.DisplayMember = "Title";
radGridView1.Columns.Add(statusColumn);
radGridView1.AutoGenerateColumns = false;
radGridView1.DataSource = dataSource;
BaseGridBehavior gridBehavior = this.radGridView1.GridBehavior as BaseGridBehavior;
gridBehavior.UnregisterBehavior(typeof(GridViewDataRowInfo));
gridBehavior.RegisterBehavior(typeof(GridViewDataRowInfo), new CustomGridBehavior());
}
public class GridItem
{
public int Id { get; set; }
public string Name { get; set; }
public string CurrentStatus { get; set; }
public GridItem(int id, string name, string currentStatus)
{
this.Id = id;
this.Name = name;
this.CurrentStatus = currentStatus;
}
}
public class Status
{
public int Code { get; set; }
public string Title { get; set; }
public Status(int code, string title)
{
this.Code = code;
this.Title = title;
}
}
public class CustomGridBehavior : GridDataRowBehavior
{
protected override bool ProcessDeleteKey(KeyEventArgs keys)
{
if (this.GridControl.CurrentCell is GridDataCellElement &&
this.GridControl.CurrentColumn is GridViewComboBoxColumn)
{
this.GridControl.CurrentCell.Value = string.Empty;
return true;
}
return base.ProcessDeleteKey(keys);
}
}
I hope this information helps. Should you have further questions, I would be glad to help.
Regards,
Desislava
Telerik
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