private void button3_Click(object sender, EventArgs e) { try { Excel.ShowDialog(); ex.Workbooks.Open(Excel.FileName, 0, false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "", true, false, 0, true, false, false); Microsoft.Office.Interop.Excel.Worksheet ObjWorkSheet; ObjWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)ex.Sheets[1]; textBox1.Text = Excel.FileName.ToString(); } catch { } }