有个vb.net2005+sql2005的数据库问题 大家能不能帮忙解答阿！

Dim disp_del_str As String = "您确认删除用户编号为" + Me.user_id.Text + "，用户名称为" + Me.user_name.Text + "的用户么？"
If MsgBox(disp_del_str, MsgBoxStyle.YesNo, "确认窗口！") = MsgBoxResult.Yes Then
Try
sys_conn.Open()
Dim user_del_str As String = "delete * From sys_user Where user_id='" + Me.user_id.Text + "'"
Dim user_del_command As New SqlClient.SqlCommand(user_del_str, sys_conn)
user_del_command.ExecuteNonQuery()

sys_ds.Clear()
Dim user_disp_str As String = "select user_id as 用户编号,user_name as 用户名称,user_qx as 用户权限,user_time as 注册时间,user_works as 工作岗位,user_zw as 用户职务,user_memo as 用户备注 From sys_user"
Dim user_disp_adapter As New SqlClient.SqlDataAdapter(user_disp_str, sys_conn)
Dim user_disp_command As New SqlClient.SqlCommandBuilder(user_disp_adapter)
user_disp_adapter.Fill(sys_ds, "sys_user")

Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
sys_conn.Close()
End Try
Else
Exit Sub
End If
删除时 一直说 * 号附近语法错误 什么问题 望解答，谢谢 ！