The type or namespace name 'xxx' does not exist!

Question

hi everyone
I tried to move my project from vs 2003 to 2005 but getting problem in xsd file'snamespace. Help me, thanks.

namespace WAMS.WinForm.Editors {

    using System;

    using System.Data;

    using System.Xml;

    using System.Runtime.Serialization;

    

[Serializable()]

    [System.ComponentModel.DesignerCategoryAttribute("code")]

    [System.Diagnostics.DebuggerStepThrough()]

    [System.ComponentModel.ToolboxItem(true)]

    public class dsProjectStock : DataSet {

           public dsProjectStock() {

            this.InitClass();

            System.ComponentModel.CollectionChangeEventHandler schemaChangedHandler = new System.ComponentModel.CollectionChangeEventHandler(this.SchemaChanged);

            this.Tables.CollectionChanged += schemaChangedHandler;

            this.Relations.CollectionChanged += schemaChangedHandler;

        }
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