I have a VB.net script that puts information into a table in MSSQL database.
I managed to update datas by using only datagridview.
Now I am trying to figure out how to update another column in same table that refers a calculation between two other columns.
For that column(let's say Column3
) I have used computed column specification properity like this: (Column1*Column2).
Anyway when I update Column1
I want to see changes in Column3
at the same time.
Actually value of Column3
is changing but it does not show up until I restart debugging.
So here is the deal... I want to see the changes simultaneously. What kind of code I should use?
I am a beginner so I am not aware of possibilities.
Should I use a trigger for this? If I have to how? (I have tried Select Column1, Column2, Column3 as (Column1/Coulmn2) from Table1
and then viewing from datagridview but id did not work either. I don't remember exact reason why it did not work)
(Database name: Database1, Table name: Table1, Columns: Column1, Column2 ,Column3)
Code:
Public Sub tryupdate(Query As String)
Try
sqlcon.Open()
sqlCmd = New SqlCommand(Query, sqlcon)
sqlDA = New SqlDataAdapter(sqlCmd)
Dim SqlCmdBuild As SqlCommandBuilder = New SqlCommandBuilder(sqlDA)
sqlDA.UpdateCommand = SqlCmdBuild.GetUpdateCommand()
sqlDA.Update(sqlDataset)
sqlcon.Close()
Catch ex As Exception
If sqlcon.State = ConnectionState.Open Then sqlcon.Close()
MsgBox(ex.Message)
End Try
End Sub
Private Sub dataset_fill()
sql.tryupdate("select * from [Quantities&Planning]")
DgwNewLayout.DataSource = sql.sqlDataset.Tables(0)
End Sub
Private Sub DgwNewLayout_CellValueChanged(sender As Object, e As DataGridViewCellEventArgs) Handles DgwNewLayout.CellValueChanged
dataset_fill()
End Sub
1条答案
按热度按时间watbbzwu1#
I used this code as solution.