private void btnLogin_Click(object sender, EventArgs e) { string str = ""; string str2 = ""; if (StringType.StrCmp(this.cboUserName.Text, "", false) == 0) { OMISFunction.MessageboxInfo("請選擇要登入的使用者名稱 !", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); this.cboUserName.Focus(); return; } else { str3 = Strings.Mid(this.cboUserName.Text, Strings.InStr(this.cboUserName.Text, "=", CompareMethod.Text) + 1); str = Strings.Trim(Strings.Mid(this.cboUserName.Text, 1, Strings.InStr(this.cboUserName.Text, "=", CompareMethod.Text) - 1)); string strSql = "select ID from view_user where ID= " + str3; try { //這裡省略驗證過程 } catch (Exception exception1) { ProjectData.SetProjectError(exception1); Exception exception = exception1; Debug.WriteLine(Information.Err().Description); ProjectData.ClearProjectError(); } } }這是我寫的程式裡的一部分。沒有貼全，特別是驗證部分。