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I have a data view web part and it does insert,delete ,in edit mode it save and cancel button.The data is based on a custom list.In the list i have set the max to 4 but in DWP it doesn't seem to work. When in Edit mode or in Insert mode i want to validate this field

<SharePoint:formfield runat="server" id="ff9{$Pos}" ControlMode="Edit" FieldName="Quantity" ItemId="{@ID}" __designer:bind="{ddwrt:DataBind('u',concat('ff9',$Pos),'Value','ValueChanged','ID',ddwrt:EscapeDelims(string(@ID)),'@Quantity')}" />

I want make sure the number being added is not greater that 4. Any ideas? Thanks

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please let me know how did you validated it. I am facing similar issue. –  user3942 Jun 30 '11 at 10:37
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2 Answers

I think you should create a customfield

and overrides the validate method

create custom field : http://msdn2.microsoft.com/en-us/library/aa981226.aspx

    public override void Validate()
{
   //make your validation here

}
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Thanks but i did this using Sharepoint Designer. If i did build it in Visual Studio i could have taught of that earlier I need something on the client if it exists. –  Patrick Aug 30 '10 at 23:38
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up vote 0 down vote accepted

Fixed. I used the function PreSaveAction() to fix this

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