查找重复项并在新的datagridview中显示

Question

我有两个datagridviews：

DataGridView1： 这是使用以下代码从csv文件生成的：

For Each line As String In System.IO.File.ReadAllLines("C:\path\test.csv")
                Form1.DataGriView1.Rows.Add(line.Split(";"))
 Next

The.csv文件具有以下格式：

12345;有些文字; 2000000; 12345678901; 2014-07-31;

23456;有些文字; 2000000; 10987654321; 2014-07-11;

DataGridView2 这是使用以下代码生成的excel文件：

 Dim MyConnection As System.Data.OleDb.OleDbConnection
            Dim DtSet As System.Data.DataSet
            Dim MyCommand As System.Data.OleDb.OleDbDataAdapter

            MyConnection = New System.Data.OleDb.OleDbConnection _
                ("provider=Microsoft.Jet.OLEDB.4.0; Data Source='C:\Users\path\excel.xls'; Extended Properties=Excel 8.0;")
            MyCommand = New System.Data.OleDb.OleDbDataAdapter _
                    ("select * from [Sheet$]", MyConnection)
            DtSet = New System.Data.DataSet
            MyCommand.Fill(DtSet)
            Form1.DataGridView2.DataSource = DtSet.Tables(0)
            MyConnection.Close()

Excel文档有6列，带有标题。

问题：

我需要找到重复项并在第三个gridview中显示数据。具体来说，我想看看DataGridView1中列column1中的值是否在DataGridView2中的列polnr中。如果是这样，我希望将DataGridView中的整行复制到DataGridView3

是的，我自己尝试过并在整个互联网上搜索过。有人能帮助我吗？

Answer 1

这应该适用于未绑定的dgv 1 + 3

    Dim rowlist As New ArrayList
    Dim dgv3row As New DataGridViewRow

    For Each dgv1row As DataGridViewRow In DataGridView1.Rows
        For Each dgv2row As DataGridViewRow In DataGridView2.Rows

            If dgv1row.Cells("Column1").Value = dgv2row.Cells("polnr").Value Then

                For Each dgvcell As DataGridViewCell In dgv1row.Cells
                    rowlist.Add(dgvcell.Value)
                Next

                If rowlist.Count > 0 Then
                    Dim dgv3rowindex As Integer = DataGridView3.Rows.Add()

                    dgv3row = DataGridView3.Rows(dgv3rowindex)

                    For Each dgv3cell As DataGridViewCell In dgv3row.Cells
                        dgv3cell.Value = rowlist(dgv3cell.ColumnIndex)
                    Next

                    rowlist.Clear()
                End If
            End If
        Next
    Next