Thanks for your response Martin,
So in SqlDataSource's "Updating" event, we can access the parameters
through the SqlDataSourceEventArg 's
Command.Parameters collection. For example:
protected void SqlDataSource1_Updating(object sender,
SqlDataSourceCommandEventArgs e)
{
Response.Write("<br>CommandType: " + e.Command.CommandType);
Response.Write("<br>Commandparammeters: " + e.Command.Parameters.Count);
foreach (DbParameter param in e.Command.Parameters)
{
Response.Write("<br>" + param.ParameterName + ": " + param.Value);
}
e.Cancel = true;
}
Also, for intercepting the updating or deleting operation and do our
customziation, I'd suggest you consider do it at databound control level
instead of at datasource level as much as possible. Because the DataBound
controls also provide some certain data accessing related pre/post
processing events such as GridView's RowUpdating/RowUpdated , Formview's
ItemUpdating/ItemUpdated .... and they're more easiser to use then
DataSource control's events.
e.g.
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs
e)
{
//e.Keys;
//e.NewValues;
//e.OldValues;
}
Hope also helps. thanks,
Steven Cheng
Microsoft Online Support
Get Secure!
www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
| Thread-Topic: Modify SqlDataSource parameters before select
| thread-index: AcXWDTPeMZdfCKCyT8unaRTKrcH8lw==
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| Subject: RE: Modify SqlDataSource parameters before select
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|
| Hi Steven,
| thanks for your reply. In fact, what you describe is exactly what I have
| done so far. But how to continue from there, how do I access and modify
the
| SqlDataSource's parameter values? I have not found any documentation /
sample
| about that.
|
| Martin Bischoff
|
|
| "Steven Cheng[MSFT]" wrote:
|
| > Hi Martin,
| >
| > Welcome to ASPNET newsgroup.
| > As for the modifying SqlDataSource's parameters before the select
command
| > actually get executed, we can utilize the
| > SqlDataSource control's "Selecting" event, this event get fired before
the
| > actual execute command being executed. the event will have a
| > SqlDataSourceSelectingEventArgs paramter passed in which can help us
| > access the paramters used to perform the select comand:
| >
| > protected void SqlDataSource1_Selecting(object sender,
| > SqlDataSourceSelectingEventArgs e)
| > {
| >
| > }
| >
| > In fact, in asp.net 2.0 , all the datasource controls support some
buildin
| > pre/post processsing events such as
| > "selecting/selected", "updating/updated"..... which get fired
before/after
| > a certain command executing.
| >
| > Hope helps. Thanks,
| >
| > Steven Cheng
| > Microsoft Online Support
| >
| > Get Secure!
www.microsoft.com/security
| > (This posting is provided "AS IS", with no warranties, and confers no
| > rights.)
| >
| >
| > --------------------
| > | Thread-Topic: Modify SqlDataSource parameters before select
| > | thread-index: AcXVY3bXKFhY+ZLJTQeWe1aVqsr9nA==
| > | X-WBNR-Posting-Host: 194.209.202.1
| > | From: =?Utf-8?B?TWFydGluIEJpc2Nob2Zm?= <ni******@newsgroup.nospam>
| > | Subject: Modify SqlDataSource parameters before select
| > | Date: Thu, 20 Oct 2005 03:46:02 -0700
| > | Lines: 24
| > | Message-ID: <A7**********************************@microsoft.co m>
| > | MIME-Version: 1.0
| > | Content-Type: text/plain;
| > | charset="Utf-8"
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| > microsoft.public.dotnet.framework.aspnet:132687
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > |
| > | Hi,
| > | is it possible to modify the values of a SqlDataSource's select
| > parameters
| > | in the code behind before the select command is executed?
| > |
| > | Example:
| > |
| > | I have an SqlDataSource with a ControlParameter
| > |
| > | <asp:SqlDataSource ID="SqlDataSource1" runat="server"
| > | ConnectionString="<%$ ConnectionStrings:XYZ %>"
| > | SelectCommand="myStoredProcedure"
| > | SelectCommandType="storedProcedure">
| > | <SelectParameters>
| > | <asp:ControlParameter ControlID="txtTitle" Name="Title"
| > | PropertyName="Text" Type="String" DefaultValue="%" />
| > | </SelectParameters>
| > | </asp:SqlDataSource>
| > |
| > | What I'd like to do is to modify the value of the Title parameter
before
| > the
| > | select command is executed. E.g. if the user enters "abc*" in
txtTitle,
| > I'd
| > | like to change the parameter's value to "abc%".
| > |
| > | Thanks for any help,
| > | Martin
| > |
| >
| >
|
