DataGridLinkButton.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / DataGridLinkButton.cs / 1 / DataGridLinkButton.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls { 
 
    using System;
    using System.Drawing; 
    using System.Web.Util;


    ///  
    ///  Derived version of LinkButton used within a DataGrid.
    ///  
    [SupportsEventValidation] 
    internal sealed class DataGridLinkButton : LinkButton {
 
        internal DataGridLinkButton() {}

        protected internal override void Render(HtmlTextWriter writer) {
            SetForeColor(); 
            base.Render(writer);
        } 
 

        ///  
        ///  In HTML hyperlinks always use the browser's link color.
        ///  For the DataGrid, we want all LinkButtons to honor the ForeColor setting.
        ///  This requires looking up into the control hierarchy to see if either the cell
        ///  or the containing row or table define a ForeColor. 
        /// 
        private void SetForeColor() { 
            if (ControlStyle.IsSet(System.Web.UI.WebControls.Style.PROP_FORECOLOR) == false) { 
                Color hyperLinkForeColor;
                Control control = this; 

                for (int i = 0; i < 3; i++) {
                    control = control.Parent;
 
                    Debug.Assert(((i == 0) && (control is TableCell)) ||
                                 ((i == 1) && (control is TableRow)) || 
                                 ((i == 2) && (control is Table))); 
                    hyperLinkForeColor = ((WebControl)control).ForeColor;
                    if (hyperLinkForeColor != Color.Empty) { 
                        ForeColor = hyperLinkForeColor;
                        break;
                    }
                } 
            }
        } 
    } 
}

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