I checked with this code,it's working fine.
DataTable datatable5 = new DataTable();
datatable5.Columns.Add("ToolTip");
datatable5.Columns.Add("Icons");
datatable5.Columns.Add("ID");
datatable5.Columns.Add("Number");
for (int i = 0; i < 4; i++)
datatable5.Rows.Add(new object[] { String.Format("ToolTip{0}.", i),i,i,i});
gridControl2.DataSource = dataTable5;
gridView2.Columns["ToolTip"].Visible = false;
gridView2.Columns["Icons"].Visible = false;
In your code : place a breakpoint
and check how the column names
are adding to datatable
DataTable dataTable5 = new DataTable();
string[] strArrays17 = strArrays16;
for (int s = 0; s < (int)strArrays17.Length; s++)
{
string str5 = strArrays17[s];
dataTable5.Columns.Add(str5);//check any extra space adding here
}
for (int t = 1; t < (int)strArrays15.Length; t++)
{
char[] chrArray11 = new char[1];
chrArray11[0] = '\t';
dataTable5.Rows.Add(strArrays15[t].Split(chrArray11));
}