protected void btnDelete_Click(object sender, EventArgs e) { DocumentDetails docObj = new DocumentDetails(); ELibraryDocumentBL docBLObj = new ELibraryDocumentBL(); try { if (cbnDocumentID.SelectedIndex == -1) { throw new ELibraryException("Select Document ID"); } docObj.DocumentID = Convert.ToInt32(cbnDocumentID.SelectedValue); if (docBLObj.DeleteDocumentBL(docObj)) { ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Successfully Deleted')", true); } else { ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Deletion Failed')", true); } InitializeCombo(); } catch (ELibraryException ex) { ErrorLogging erLog = new ErrorLogging(); erLog.LogError(ex.Message); ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('" + ex.Message + "')", true); } }