Dim mydataset As New DataSet
Dim da As New SqlClient.SqlDataAdapter
Dim rs As String = "select aa,bb from s_matpart"
da.SelectCommand = New SqlClient.SqlCommand(rs, conn)
da.Fill(mydataset)
mydataset.Tables(0).Rows.Add()
我想在mydataset.Tables(0)增加一行,并赋值进去,请问怎样操作
DataGridView1.DataSource = mydataset.Tables(0)

但是我不想增加一行，我想在规定行号插入一行
mydataset.Tables(0).Rows.Add()这条语句怎么改呢

dim dr as datarow

dr = mydataset.tables(0).newrow

dr(0) = ...
dr(1) = ...

...

mydataset.tables(0).rows.insertat(dr, RowIndex)