CustomExpression.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Extensions / UI / WebControls / Expressions / CustomExpression.cs / 1305376 / CustomExpression.cs
                        

                        
                            #if ORYX_VNEXT 
namespace Microsoft.Web.Data.UI.WebControls.Expressions {
    using System.Web;
    using Microsoft.Web.Query.Dynamic;
#else 
namespace System.Web.UI.WebControls.Expressions {
    using System.Web.Query.Dynamic; 
#endif 
    using System;
    using System.Linq.Expressions; 
    using System.Security.Permissions;
    using System.Text.RegularExpressions;
    using System.Web.UI;
    using System.Web.UI.WebControls; 
    using System.Collections.Generic;
    using System.Linq; 
 
    [
    PersistChildren(false), 
    ParseChildren(true, "Parameters")
    ]
    public class CustomExpression : ParameterDataSourceExpression {
        private EventHandler _querying; 

        public event EventHandler Querying { 
            add { 
                _querying += value;
            } 
            remove {
                _querying -= value;
            }
        } 

        public override IQueryable GetQueryable(IQueryable source) { 
            CustomExpressionEventArgs e = new CustomExpressionEventArgs(source, GetValues()); 
            OnQuerying(e);
            return e.Query; 
        }

        private void OnQuerying(CustomExpressionEventArgs e) {
            if (_querying != null) { 
                _querying(this, e);
            } 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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