大家帮帮忙！！谢谢
Dim layid As String = (Me.DataAccess.ExecuteScalar("select max(LAYID) from T_LAYDETAIL")).ToString

layid = Convert.ToString(Convert.ToInt32(layid) + 1)
第二句报错输入字符串的格式不正确
怎么处理下

[解决办法]

Dim layid As Integer
dim strlayid as String
layid=Me.DataAccess.ExecuteScalar("select max(LAYID) from T_LAYDETAIL")
strlayid=(layid+1).toString

试试