Question

How can I use Select method of a DataTable just to fetch UserNames starting with ‘M’. Lets assume that UserNameTextBox has a string M

oDataTable.Select("UserName = '" + UserNameTextBox.Text + "'");
DataView oDataView = oDataTable.DefaultView;
oDataView.Sort = "UserName";
UserGridView.DataSource = oDataView;
UserGridView.DataBind();

and when I typed full name into textbox, which I am sure DataTable contains, it list everything not just what I typed. Can someone help me please?

Answer 1

You could either use the DataTable.Select, DatView.RowFilter methods or LINQ-to-DataSet:

LINQ:

var tblFiltered = (from row in oDataTable.AsEnumerable()
                  where row.Field<String>("UserName").Contains(UserNameTextBox.Text)
                  select row).CopyToDataTable();

ADO.NET(DataTable.Select):

DataRow[] filteredRows = oDataTable.Select("UserName LIKE '%" + UserNameTextBox.Text + "%'");

ADO.NET(DataView.RowFilter):

 oDataView.RowFilter = "UserName LIKE '%" + UserNameTextBox.Text + "%'";