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比较DataGridView单元格中的旧值和新值 [ ^ ]







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In DataGridView, I need to display the old value and also the new value too.

I selected some values from DataTable and showing in DataGridView. It's fine next time I am going to select some value from DataTable and need to display in the same DataGridView, but that old values...

private void button1_click(object sender,EventArgs e)
{ 
    string strGetProductName;
    strGetProductName = sender.ToString();
    strGetProductName = strGetProductName.Replace("System.Windows.Forms.Button, Text: ", "");
    
    strCon = GetConnectionString();
    OleDbConnection objCon = new OleDbConnection(strCon);
    string Query = "Select Category,SubCategory,Rate,Qty from tblProduct where SubCategory ='" + strGetProductName + "' ";
    objCon.Open();
    OleDbDataAdapter adpter = new OleDbDataAdapter(Query, objCon);
    DataTable dt = new DataTable();
    adpter.Fill(dt);
    objCon.Close();
    dataGridView1.DataSource = dt;
}

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Compare old and new value in DataGridView cell[^]


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