参考帮助 做的自定义用户管理 在增加用户时候 当已有重复用户的时候会报错~
怎么解决
代码如下
Dim UserName As String = e.Form.Controls("UserName").Value
Dim UserGroup As String = e.Form.Controls("UserGroup").Value
Dim PassWord As String = e.Form.Controls("PassWord").Value
Dim Department As String = e.Form.Controls("Department").Value
Dim cmd As New SQLCommand
cmd.C
If UserName = "" OrElse UserGroup = "" OrElse PassWord= "" Then
Messagebox.show("请输入帐号名,密码和用户分组!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
Return
End If
cmd.CommandText = "Insert Into {Users} ([Name],[Group],[Password],[Department]) Values ('"
cmd.CommandText = cmd.CommandText & UserName & "','" & UserGroup & "','" & Password & "','" & Department & "')"
If cmd.ExecuteNonQuery = 1 Then '返回1表示增加成功
Dim Result As DialogResult
Result = MessageBox.Show("增加用户成功!是否继续增加", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
If Result = DialogResult.Yes Then
Else
If Forms("用户管理").Opened Then
With Forms("用户管理").Controls("ListBox1")
.Items.Add(UserName)
.SelectedIndex = .Items.Count -1
End With
End If
e.Form.Close()
End If
Else
Messagebox.show("增加用户失败, 可能存在同名用户!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
End If
此主题相关图片如下:qq截图20120203125903.jpg