How to add computing columns to the DATAGRID of SL ?, Sldatagrid

How to add computing columns to the DATAGRID of SL ?, Sldatagrid

For example, the entity class in my database corresponds to the entity class in EF

Class

{

Public int F1;

Public int F2;

}

Domainservice on the server

I used wcf ria on the SL end and bound it to a datagrid. I want to add a column, myF3 = F1 + F2, to achieve similar results.

Please kindly advise. Thank you !!!

In VB60, how does the datagrid control calculate and summarize the row and column data in the last row of the same datagrid Control?

The datagrid does not work. Because the datagrid is bound to the database, an additional row cannot be added. Even if it is displayed after statistics are performed in the SQL command using the union method, the datagrid cannot be added. There are two solutions: 1. Use MSFlexGrid; 2. Write a user control by yourself, which means there are two datagrid in it, a large one, dedicated display record, and a small one, do not show the Union count for the title line; Add code in it to make them scroll horizontally and synchronously.
 
Datagridview column calculation and Problems

Bored at work. The first time you wrote Winform, you can see
Using System;
Using System. Data;
Using System. Windows. Forms;
Using System. Data. OleDb;
Namespace ExcelTest
{
Public partial class Form1: Form
{
Public Form1 ()
{
InitializeComponent ();
}
/// <Summary>
/// Select the file button to click the event
/// </Summary>
/// <Param name = "sender"> </param>
/// <Param name = "e"> </param>
Private void btnSelect_Click (object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog ();
OpenFileDialog. InitialDirectory = "C :\\"; // The path is c :\, not c :\
OpenFileDialog. Filter = "all files | *. * | Excel2003 | *. xls | Excel | *. xlsx ";
OpenFileDialog. RestoreDirectory = true;
OpenFileDialog. FilterIndex = 1;
If (openFileDialog. ShowDialog () = DialogResult. OK)
{
This.txt FileName. Text = openFileDialog. FileName; // write the file path to the TextBox Control.
}
}
/// <Summary>
/// Click the Read File button
/// </Summary>
/// <Param name = "sender"> </param>
/// <Param name = "e"> </param>
Private void btnRead_Click (object sender, EventArgs e)
... The remaining full text>