How to disable row header in devexpress xtragrid

I am assuming that you are using this for an unbound column in a gridView (Xtragrid), first step is make sure to go to the column properties, and change the UnboundType property value to the datatype that you will be entering into that column, example below uses double.

Assign the CustomUnboundColumnData event to your gridView. Make sure that you declare a class level variable (named _userEnteredData in code sample below) to hold the value that you are entering into your gridView, then add the following piece of code, but make sure that you change the names to match your gridView and variable names:

Class level variable declaration:

private double _userEnteredData = 0;

Now the event:

private void gridView1_CustomUnboundColumnData(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e)
{
    if (e.Column == gridColumn_YourColumn && e.IsSetData)
    {
        _userEnteredData = Convert.ToDouble(e.Value);
    }
    else if (e.Column == gridColumn_YourColumn && e.IsGetData)
    {
        e.Value = _userEnteredData;
    }
}

I hope this helps.

You can get further details from here: http://documentation.devexpress.com/#WindowsForms/CustomDocument1477

To hide a column from user set columns visible property to False as mentioned above.

However this puts the hidden column in SelectColumn Menu which user can access at run time.

Right Click Grid Header -> Click Select Columns -> Choose hidden column from small window -> Drag it to the Grid.

In this case your hidden columns will be available to user. There are two possible solutions to avoid above Situation:

1. In Addition to setting visible property of Column also set OptionColumn.AllowShowHide to False. This will make sure that this column will not Pop up in column select window.

2. Other solution should be used only when you want to give absolutely no right to the user for changing the layout of the grid. This can be done by Setting GridView's property - OptionMenu->EnableColumnMenu to False. However after setting this user will be restricted from all other layout Options also like Groupping, filter, search etc.