In rowupdating

03-Dec-2019 09:20 by 5 Comments

In rowupdating - gibson dating

NET Grid View Tips and Tricks series, this post shows how to cancel the Update and Delete operation in an ASP. To cancel an update and delete operation, we will make use of the Row Updating and Row Deleting events.

In this example, I am going to retrieve values from categories table of Northwind database. Drag a Grid View into the Web Form and assign Data Key Names property with the primary key column i.e. In the gdview_Row Editing and gdview_Row Deleting event, we have used the below code to retrieve categoryid from datakey of Grid View, int catid = int.

Sql Command Dim sql3 As String Dim reader3 As System.

Connection = conn2 sql = "SET DATEFORMAT dmy; SELECT * FROM XXXX " cmd. Execute Reader() Dim Temp Staff Key As Integer Dim Temp Post Key As Integer Dim Temp Shift Date As Date Time Dim Temp Start Time As Date Time Dim Temp End Time As Date Time Dim Temp SL As String Dim Temp Roster Key As Integer Dim Temp VL As String Dim Temp ML As String Dim Temp PH As String Dim Temp APH As String Dim Temp TOIL As String Dim Temp Others As String Dim Temp Shift Type As Integer Dim Temp Submitted By As Integer Dim dt As New Data Table() dt. Add(New Data Column("Staff Name", Get Type(String))) dt. Add(New Data Column("Post Code", Get Type(String))) dt. Add(New Data Column("Staff Key", Get Type(Int32))) dt. Add(New Data Column("Post Key", Get Type(Int32))) 'Monday dt. Add(New Data Column("Col1_Roster Key", Get Type(Int32))) dt. Add(New Data Column("Col1_Shift Date", Get Type(Date Time))) dt. Add(New Data Column("Col1_Start Time", Get Type(Date Time))) dt. Add(New Data Column("Col1_End Time", Get Type(Date Time))) dt. Add(New Data Column("Col1_SL", Get Type(String))) dt.

A Grid View Update Event Args object is passed to the event-handling method, which enables you to determine the index of the current row and to indicate that the update operation should be canceled.

To cancel the update operation, set the collections, if necessary, before the values are passed to the data source.

But I have no idea how to get those value when doing Row Editing & Row Updating. Bind Data() End Sub Protected Sub Grid View1_Row Updating(By Val sender As Object, By Val e As Grid View Update Event Args) 'Retrieve the table from the session object.

New Edit Index 'Bind data to the Grid View control. Bind Data() End Sub Private Sub Create Data Table() Dim cmd As New System.

If we move our mouse on to the variables, which hold the cell values, we can see the old value instead of new updated value (Refer the debugging Screen Shot at the Top).

Value); I have an error: "Input string was in incorrect format" because "total_column_drop_down_list.

Basically, I have one field that gets its value via a combo box, the first value in the combos represents the unassigned/not applicable/not set value, or the null value for that record, it works when I assign other values, say 1, 2, or 3, when the combo gets -1 I want to clear this value i.e.

put the null value, but the line above doesn't seem to do anything, I've tried actually puts 0 instead of null.

Wherever you are binding your Grid View, in Page_Load for instance, you need to do this: On a slightly unrelated note, you can actually use the Grid View Update Event Args parameter that's passed to that method to grab the updated values (rather than using Find Control to get the Drop Down List, and then getting the values).

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