With AllowMergingEnum.Spill available with C1Flexgrid long text can spill to adjacent cells. However this features works once the editing is complete. While the user is editing, text scrolls within the editor bounds. Well implementation is easier then one can think. All we need to do is handle KeyUpEdit event of C1Flexgrid, calculate the size of string while user enters text; and increase the width of editor accordingly. Following code block shows the implementation for the same.
private void c1FlexGrid1_KeyUpEdit(object sender, C1.Win.C1FlexGrid.KeyEditEventArgs e)
{
//Fetch the editor
TextBox tb = this.c1FlexGrid1.Editor as TextBox;
if (tb != null)
{
//Get handle of the textbox
Graphics g = Graphics.FromHwnd(tb.Handle);
//Fetch the space needed by text as per its FontSize/FontStyle
SizeF size = g.MeasureString(tb.Text, tb.Font);
//set width of textbox
tb.Width = (int)size.Width;
}
}