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SqlConnection conn = new SqlConnection(ConnectionString);
conn.Open();
DataTable dt = conn.GetSchema("Tables", null);
conn.Close();
DataGridView1.DataSource = dt;
protected void Page_Load(object sender, EventArgs e)
{
OleDbConnection conn = new OleDbConnection(ConnectionString);
conn.Open();
DataTable dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,null);
conn.Close();
GridView1.DataSource = dt;
GridView1.DataBind();
}