Dim dr As DataRow = DataTables("bh").Find("表名 = 'abcd'") If dr IsNot Nothing Then Dim id As Integer Dim st As String = dr("序号") If Integer.TryParse(st,id) Then id = id + 1 dr("序号") = id dr.Save End If Else dr = DataTables("bh").AddNew dr("表名") = "abcd" dr("序号") = "1" dr.Save End If