TreeViewImageKeyConverter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / TreeViewImageKeyConverter.cs / 1305376 / TreeViewImageKeyConverter.cs
                        

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

/* 
 */ 
namespace System.Windows.Forms {
 
    using Microsoft.Win32;
    using System.Collections;
    using System.ComponentModel;
    using System.Drawing; 
    using System.Diagnostics;
    using System.Globalization; 
    using System.Reflection; 
    using System.Collections.Specialized;
 
    /// 
    /// 
    /// ImageIndexConverter is a class that can be used to convert
    /// image index values one data type to another. 
    /// 
    public class TreeViewImageKeyConverter : ImageKeyConverter { 
 
        /// 
        ///  
        /// Converts the given object to another type.  The most common types to convert
        /// are to and from a string object.  The default implementation will make a call
        /// to ToString on the object if the object is valid and if the destination
        /// type is string.  If this cannot convert to the desitnation type, this will 
        /// throw a NotSupportedException.
        ///  
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { 
            if (destinationType == null) {
                throw new ArgumentNullException("destinationType"); 
            }

            if (destinationType == typeof(string) && (value == null)) {
                return SR.GetString(SR.toStringDefault); 
            }
            else { 
                string strValue = value as string; 
                if (strValue != null && (strValue.Length == 0)) {
                    return SR.GetString(SR.toStringDefault); 
                }
            }

 	    return base.ConvertTo(context, culture, value, destinationType); 
        }
 
    } 
}
 

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

/* 
 */ 
namespace System.Windows.Forms {
 
    using Microsoft.Win32;
    using System.Collections;
    using System.ComponentModel;
    using System.Drawing; 
    using System.Diagnostics;
    using System.Globalization; 
    using System.Reflection; 
    using System.Collections.Specialized;
 
    /// 
    /// 
    /// ImageIndexConverter is a class that can be used to convert
    /// image index values one data type to another. 
    /// 
    public class TreeViewImageKeyConverter : ImageKeyConverter { 
 
        /// 
        ///  
        /// Converts the given object to another type.  The most common types to convert
        /// are to and from a string object.  The default implementation will make a call
        /// to ToString on the object if the object is valid and if the destination
        /// type is string.  If this cannot convert to the desitnation type, this will 
        /// throw a NotSupportedException.
        ///  
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { 
            if (destinationType == null) {
                throw new ArgumentNullException("destinationType"); 
            }

            if (destinationType == typeof(string) && (value == null)) {
                return SR.GetString(SR.toStringDefault); 
            }
            else { 
                string strValue = value as string; 
                if (strValue != null && (strValue.Length == 0)) {
                    return SR.GetString(SR.toStringDefault); 
                }
            }

 	    return base.ConvertTo(context, culture, value, destinationType); 
        }
 
    } 
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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