DataGridViewLinkColumn.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridViewLinkColumn.cs / 1 / DataGridViewLinkColumn.cs
                        

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

namespace System.Windows.Forms 
{ 
    using System;
    using System.Text; 
    using System.Drawing;
    using System.ComponentModel;
    using System.Windows.Forms;
    using System.Globalization; 

    ///  
    [ToolboxBitmapAttribute(typeof(DataGridViewLinkColumn), "DataGridViewLinkColumn.bmp")] 
    public class DataGridViewLinkColumn : DataGridViewColumn
    { 
        private static Type columnType = typeof(DataGridViewLinkColumn);

        private string text;
 
        /// 
        public DataGridViewLinkColumn() : base(new DataGridViewLinkCell()) 
        { 
        }
 
        /// 
        [
            SRCategory(SR.CatAppearance),
            SRDescription(SR.DataGridView_LinkColumnActiveLinkColorDescr) 
        ]
        public Color ActiveLinkColor 
        { 
            get
            { 
                if (this.CellTemplate == null)
                {
                    throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired));
                } 
                return ((DataGridViewLinkCell)this.CellTemplate).ActiveLinkColor;
            } 
            set 
            {
                if (!this.ActiveLinkColor.Equals(value)) 
                {
                    ((DataGridViewLinkCell)this.CellTemplate).ActiveLinkColorInternal = value;
                    if (this.DataGridView != null)
                    { 
                        DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
                        int rowCount = dataGridViewRows.Count; 
                        for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) 
                        {
                            DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); 
                            DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell;
                            if (dataGridViewCell != null)
                            {
                                dataGridViewCell.ActiveLinkColorInternal = value; 
                            }
                        } 
                        this.DataGridView.InvalidateColumn(this.Index); 
                    }
                } 
            }
        }

        private bool ShouldSerializeActiveLinkColor() 
        {
            return !this.ActiveLinkColor.Equals(LinkUtilities.IEActiveLinkColor); 
        } 

        ///  
        [
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ] 
        public override DataGridViewCell CellTemplate
        { 
            get 
            {
                return base.CellTemplate; 
            }
            set
            {
                if (value != null && !(value is System.Windows.Forms.DataGridViewLinkCell)) 
                {
                    throw new InvalidCastException(SR.GetString(SR.DataGridViewTypeColumn_WrongCellTemplateType, "System.Windows.Forms.DataGridViewLinkCell")); 
                } 
                base.CellTemplate = value;
            } 
        }

        /// 
        [ 
            DefaultValue(LinkBehavior.SystemDefault),
            SRCategory(SR.CatBehavior), 
            SRDescription(SR.DataGridView_LinkColumnLinkBehaviorDescr) 
        ]
        public LinkBehavior LinkBehavior 
        {
            get
            {
                if (this.CellTemplate == null) 
                {
                    throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); 
                } 
                return ((DataGridViewLinkCell)this.CellTemplate).LinkBehavior;
            } 
            set
            {
                if (!this.LinkBehavior.Equals(value))
                { 
                    ((DataGridViewLinkCell)this.CellTemplate).LinkBehavior = value;
                    if (this.DataGridView != null) 
                    { 
                        DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
                        int rowCount = dataGridViewRows.Count; 
                        for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
                        {
                            DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
                            DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell; 
                            if (dataGridViewCell != null)
                            { 
                                dataGridViewCell.LinkBehaviorInternal = value; 
                            }
                        } 
                        this.DataGridView.InvalidateColumn(this.Index);
                    }
                }
            } 
        }
 
        ///  
        [
            SRCategory(SR.CatAppearance), 
            SRDescription(SR.DataGridView_LinkColumnLinkColorDescr)
        ]
        public Color LinkColor
        { 
            get
            { 
                if (this.CellTemplate == null) 
                {
                    throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); 
                }
                return ((DataGridViewLinkCell)this.CellTemplate).LinkColor;
            }
            set 
            {
                if (!this.LinkColor.Equals(value)) 
                { 
                    ((DataGridViewLinkCell)this.CellTemplate).LinkColorInternal = value;
                    if (this.DataGridView != null) 
                    {
                        DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
                        int rowCount = dataGridViewRows.Count;
                        for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) 
                        {
                            DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); 
                            DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell; 
                            if (dataGridViewCell != null)
                            { 
                                dataGridViewCell.LinkColorInternal = value;
                            }
                        }
                        this.DataGridView.InvalidateColumn(this.Index); 
                    }
                } 
            } 
        }
 
        private bool ShouldSerializeLinkColor()
        {
            return !this.LinkColor.Equals(LinkUtilities.IELinkColor);
        } 

        ///  
        [ 
            DefaultValue(null),
            SRCategory(SR.CatAppearance), 
            SRDescription(SR.DataGridView_LinkColumnTextDescr)
        ]
        public string Text
        { 
            get
            { 
                return this.text; 
            }
            set 
            {
                if (!string.Equals(value, this.text, StringComparison.Ordinal))
                {
                    this.text = value; 
                    if (this.DataGridView != null)
                    { 
                        if (this.UseColumnTextForLinkValue) 
                        {
                            this.DataGridView.OnColumnCommonChange(this.Index); 
                        }
                        else
                        {
                            DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; 
                            int rowCount = dataGridViewRows.Count;
                            for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) 
                            { 
                                DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
                                DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell; 
                                if (dataGridViewCell != null && dataGridViewCell.UseColumnTextForLinkValue)
                                {
                                    this.DataGridView.OnColumnCommonChange(this.Index);
                                    return; 
                                }
                            } 
                            this.DataGridView.InvalidateColumn(this.Index); 
                        }
                    } 
                }
            }
        }
 
        /// 
        [ 
            DefaultValue(true), 
            SRCategory(SR.CatBehavior),
            SRDescription(SR.DataGridView_LinkColumnTrackVisitedStateDescr) 
        ]
        public bool TrackVisitedState
        {
            get 
            {
                if (this.CellTemplate == null) 
                { 
                    throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired));
                } 
                return ((DataGridViewLinkCell)this.CellTemplate).TrackVisitedState;
            }
            set
            { 
                if (this.TrackVisitedState != value)
                { 
                    ((DataGridViewLinkCell)this.CellTemplate).TrackVisitedStateInternal = value; 
                    if (this.DataGridView != null)
                    { 
                        DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
                        int rowCount = dataGridViewRows.Count;
                        for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
                        { 
                            DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
                            DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell; 
                            if (dataGridViewCell != null) 
                            {
                                dataGridViewCell.TrackVisitedStateInternal = value; 
                            }
                        }
                        this.DataGridView.InvalidateColumn(this.Index);
                    } 
                }
            } 
        } 

        ///  
        [
            DefaultValue(false),
            SRCategory(SR.CatAppearance),
            SRDescription(SR.DataGridView_LinkColumnUseColumnTextForLinkValueDescr) 
        ]
        public bool UseColumnTextForLinkValue 
        { 
            get
            { 
                if (this.CellTemplate == null)
                {
                    throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired));
                } 
                return ((DataGridViewLinkCell)this.CellTemplate).UseColumnTextForLinkValue;
            } 
            set 
            {
                if (this.UseColumnTextForLinkValue != value) 
                {
                    ((DataGridViewLinkCell)this.CellTemplate).UseColumnTextForLinkValueInternal = value;
                    if (this.DataGridView != null)
                    { 
                        DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
                        int rowCount = dataGridViewRows.Count; 
                        for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) 
                        {
                            DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); 
                            DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell;
                            if (dataGridViewCell != null)
                            {
                                dataGridViewCell.UseColumnTextForLinkValueInternal = value; 
                            }
                        } 
                        this.DataGridView.OnColumnCommonChange(this.Index); 
                    }
                } 
            }
        }

        ///  
        [
            SRCategory(SR.CatAppearance), 
            SRDescription(SR.DataGridView_LinkColumnVisitedLinkColorDescr) 
        ]
        public Color VisitedLinkColor 
        {
            get
            {
                if (this.CellTemplate == null) 
                {
                    throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); 
                } 
                return ((DataGridViewLinkCell)this.CellTemplate).VisitedLinkColor;
            } 
            set
            {
                if (!this.VisitedLinkColor.Equals(value))
                { 
                    ((DataGridViewLinkCell)this.CellTemplate).VisitedLinkColorInternal = value;
                    if (this.DataGridView != null) 
                    { 
                        DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
                        int rowCount = dataGridViewRows.Count; 
                        for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
                        {
                            DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
                            DataGridViewLinkCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewLinkCell; 
                            if (dataGridViewCell != null)
                            { 
                                dataGridViewCell.VisitedLinkColorInternal = value; 
                            }
                        } 
                        this.DataGridView.InvalidateColumn(this.Index);
                    }
                }
            } 
        }
 
        private bool ShouldSerializeVisitedLinkColor() 
        {
            return !this.VisitedLinkColor.Equals(LinkUtilities.IEVisitedLinkColor); 
        }

        /// 
        public override object Clone() 
        {
            DataGridViewLinkColumn dataGridViewColumn; 
            Type thisType = this.GetType(); 

            if (thisType == columnType) //performance improvement 
            {
                dataGridViewColumn = new DataGridViewLinkColumn();
            }
            else 
            {
                // SECREVIEW : Late-binding does not represent a security threat, see bug#411899 for more info.. 
                // 
                dataGridViewColumn = (DataGridViewLinkColumn)System.Activator.CreateInstance(thisType);
            } 
            if (dataGridViewColumn != null)
            {
                base.CloneInternal(dataGridViewColumn);
                dataGridViewColumn.Text = this.text; 
            }
            return dataGridViewColumn; 
        } 

        ///  
        public override string ToString()
        {
            StringBuilder sb = new StringBuilder(64);
            sb.Append("DataGridViewLinkColumn { Name="); 
            sb.Append(this.Name);
            sb.Append(", Index="); 
            sb.Append(this.Index.ToString(CultureInfo.CurrentCulture)); 
            sb.Append(" }");
            return sb.ToString(); 
        }
    }
}

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

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK