public Form2()
{
InitializeComponent();
if (!this.IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[2] { new DataColumn("Name"), new DataColumn("Country") });
ViewState["Customers"] = dt;
this.BindGrid();
}
}
protected void BindGrid()
{
dataGridView.DataSource = (DataTable)ViewState["Customers"];
dataGridView.DataBind();
}
Error show in red highlight