Me.dataAdapter.Update(table) Update code?

Question

I've got a dynamic win form which basically just has:
Private dataGridView1 As New DataGridView()
Private bindingSource1 As New BindingSource()
Private dataAdapter As New SqlDataAdapter()
 ' Create a new data adapter based on the specified query. 
 Me.dataAdapter = New SqlDataAdapter(selectCommand, mConnectionString)
With the select command being "Select col1, col2, col3, DataModified from MyTable"
Then I have a Update button that calls 
        Me.dataAdapter.Update(CType(Me.bindingSource1.DataSource, DataTable)) Which updates the table in the database but unless I modify the LastModified field it just writes the LastModified from the database table when
it loaded. I need to specify that on the update the LastModified field for each updated row in the table with DateTime.NOW().I can't figure out how to get into the actual Update code to add this for each Update row? 

Answer 1

Hi Mimosa Arts,
According to your description, you'd like to update the specialized column with the nowtime automatically when update the other column.
I suggest you adding a
Trigger to your database. trigging it when you using the update statement.
CREATE TRIGGER tgr_modstamp
ON **TABLENAME**
AFTER UPDATE AS
UPDATE **TABLENAME**
SET **ColumnName** = GETDATE()
WHERE **ID** IN (SELECT DISTINCT **ID** FROM Inserted)
With this, when you use the update statement, the ColumnName column will be updated to NowTime automatically.
If you have any other concern regarding this issue, please feel free to let me know.
Best regards,
Youjun Tang
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