PrimaryKeyTypeConverter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Data / System / Data / PrimaryKeyTypeConverter.cs / 1 / PrimaryKeyTypeConverter.cs
                        

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

namespace System.Data { 
    using System.ComponentModel;
    using System.Globalization;
    using System.Data;
 
    internal sealed class PrimaryKeyTypeConverter : ReferenceConverter {
 
        // converter classes should have public ctor 
        public PrimaryKeyTypeConverter() :
        base(typeof(DataColumn[])) { 
        }

        public override bool GetPropertiesSupported(ITypeDescriptorContext context) {
           return false; 
        }
 
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { 
            if (destinationType == typeof(String)) {
                return true; 
            }
            return base.CanConvertTo(context, destinationType);
        }
 
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
            if (destinationType == null) { 
                throw new ArgumentNullException("destinationType"); 
            }
 
            if (destinationType == typeof(string)) {
            	  return (new DataColumn[] {}).GetType().Name;
            }
 
            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.Data { 
    using System.ComponentModel;
    using System.Globalization;
    using System.Data;
 
    internal sealed class PrimaryKeyTypeConverter : ReferenceConverter {
 
        // converter classes should have public ctor 
        public PrimaryKeyTypeConverter() :
        base(typeof(DataColumn[])) { 
        }

        public override bool GetPropertiesSupported(ITypeDescriptorContext context) {
           return false; 
        }
 
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { 
            if (destinationType == typeof(String)) {
                return true; 
            }
            return base.CanConvertTo(context, destinationType);
        }
 
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
            if (destinationType == null) { 
                throw new ArgumentNullException("destinationType"); 
            }
 
            if (destinationType == typeof(string)) {
            	  return (new DataColumn[] {}).GetType().Name;
            }
 
            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