R – sharepoint validate custom field

camllistsharepoint

I cave created a custom list in sharepoint (created and provisioned to the 12 hive)

how can i perform validation on certain fields of the list when a new list item is added?

i think i can do it through the "itemadding" event reciever, but is there a more elegant sharepoint way?

eg i just want to check an email field has a valid email format.

Best Answer

I think you have to options. As you have already mentioned using a event receiver would be one way. But I think a more elegant and above all a more SharePoint like way would be implementing your own custom field type and field control.

This will give you the option to validate the mail address before any event receiver is triggered and to react with an validation message to the user giving him the option to correct his input.

Related Solutions

How to validate data input on a sharepoint form

You'll have to use an event handler if you want to validate the state of multiple fields. You can use the ItemAdding/ItemUpdating events if you want to cancel an item which is being added/updated.

properties.Cancle = true; properties.ErrorMessage = "Your validation message.";

http://msdn.microsoft.com/en-us/magazine/cc163318.aspx

http://blogs.msdn.com/brianwilson/archive/2007/03/05/part-1-event-handlers-everything-you-need-to-know-about-microsoft-office-sharepoint-portal-server-moss-event-handlers.aspx

C# – validation for custom list sharepoint

There are a lot of samples on this out there. For example, this one.

It validates the Email column using this code snippet:

public override void ItemAdding(SPItemEventProperties properties)
{
    base.ItemAdding(properties);

    // only perform if we have an Email column
    if (properties.AfterProperties["Email"] != null)
    {
        // test to see if the email is valid
        if (!IsValidEmailAddress(properties.AfterProperties["Email"].ToString()))
        {
            // email validation failed, so display an error
            properties.Status = SPEventReceiverStatus.CancelWithError;
            properties.Cancel = true;
            properties.ErrorMessage = "Please enter a valid email address";

        }
    }


}

Best Answer

Related Solutions

How to validate data input on a sharepoint form

C# – validation for custom list sharepoint

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