41 lines
1.2 KiB
C#
41 lines
1.2 KiB
C#
namespace System.Web.UI.WebControls.Expressions {
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using System.Web.Query.Dynamic;
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using System;
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using System.Linq.Expressions;
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using System.Security.Permissions;
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using System.Text.RegularExpressions;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Collections.Generic;
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using System.Linq;
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[
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PersistChildren(false),
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ParseChildren(true, "Parameters")
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]
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public class CustomExpression : ParameterDataSourceExpression {
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private EventHandler<CustomExpressionEventArgs> _querying;
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public event EventHandler<CustomExpressionEventArgs> Querying {
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add {
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_querying += value;
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}
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remove {
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_querying -= value;
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}
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}
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public override IQueryable GetQueryable(IQueryable source) {
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CustomExpressionEventArgs e = new CustomExpressionEventArgs(source, GetValues());
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OnQuerying(e);
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return e.Query;
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}
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private void OnQuerying(CustomExpressionEventArgs e) {
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if (_querying != null) {
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_querying(this, e);
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}
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}
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}
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}
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