Retrieve query string values iin SHarePoint event receiver

In this post I would like to share quite simple code on SharePoint event receiver but it worth you lot to do List manipulation using Query string.

Scenario:

While adding/deleting/updating list item in SharePoint list depends on query string value you have to do few operations on SharePoint List.


Solution:

The below code will help you to get query string on SharePoint List Events such us List deleting, Updating, Adding etc.

Code:

public class EvtReceiverFromQuery : SPItemEventReceiver
 

{
 

/// 

/// An item is being added.
/// 

///
HttpContext oContext = null;
public EventReceiver1() : base()
{
oContext = HttpContext.Current; // we will get current httpcontext
}
 
public override void ItemAdding(SPItemEventProperties properties)
{
base.ItemAdding(properties);
if (hContext != null)
{
string queryString = hContext.Request.QueryString["A"].ToString();
//Check for Query string value.
if(queryString=="Yes")
{
//do opertaion
}
//Cancelling item adding to list
else
{
properties.cancel=true;
}
}
}