我的代码如下
Dim MyDataSet As Data.DataSet = ModMaster.QueryData("", "*", "v_prp_info", "1=1" & temp.Text & "")
Dim JudgeDataSet As Data.DataSet
Dim AllDataSet As Data.DataSet
Dim i As Integer
Dim SqlStr As String
For i = 0 To MyDataSet.Tables(0).Rows.Count - 1
SqlStr = "select ectp from cswc_eqp_constraint where eqpid='" & MyDataSet.Tables(0).Rows(i).Item("eqpid") & "' and step='" & MyDataSet.Tables(0).Rows(i).Item("step") & "'"
JudgeDataSet = ModMaster.GetDataSet(SqlStr)
==========================================
If JudgeDataSet.Tables(0).Rows.Count = 0 Then
AllDataSet.Tables(0).Rows.Add(MyDataSet.Tables(0).Rows(i).ItemArray)
End If
==========================================
Next
MyDataGrid.DataSource = AllDataSet.Tables(0)
DataBind()
中间这段报错Object reference not set to an instance of an object.
我知道这里面有错,但是不知道怎么赋值进去
不知哪位大虾看看