Determine if a property exists in an object : PropertyInfo « Reflection « C# / C Sharp

1. C# / C Sharp
2. Reflection
3. PropertyInfo

Determine if a property exists in an object

    

#region License and Copyright
/*
 * Dotnet Commons Reflection 
 *
 * Copyright  2005. EDWARD LIM
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
 * for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this library; if not, write to the 
 * Free Software Foundation, Inc., 
 * 59 Temple Place, 
 * Suite 330, 
 * Boston, 
 * MA 02111-1307 
 * USA 
 * 
 */
#endregion

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Reflection;

//using Dotnet.Commons.Lang;


namespace Dotnet.Commons.Reflection
{
  ///  
  /// <summary>
  /// This class contains utility methods that perform operations on object properties. 
  /// </summary>
  /// 
  /// <remarks> 
  ///  Copyright 2006 by Edward Lim.
  /// All rights reserved.
  /// </remarks>
  /// 
  public sealed class PropertyUtils
  {
    private PropertyUtils()  {}



    /// --------------------------------------------------------------------
    /// <summary>
    /// Determine if a property exists in an object
    /// </summary>
    /// <param name="propertyName">Name of the property </param>
    /// <param name="srcObject">the object to inspect</param>
    /// <returns>true if the property exists, false otherwise</returns>
    /// <exception cref="ArgumentNullException">if srcObject is null</exception>
    /// <exception cref="ArgumentException">if propertName is empty or null </exception>
    /// --------------------------------------------------------------------
    public static bool Exists(string propertyName, object srcObject)
    {
      if (srcObject == null)
        throw new System.ArgumentNullException("srcObject");
      
      if ((propertyName == null) || (propertyName == String.Empty) || (propertyName.Length == 0))
        throw new System.ArgumentException("Property name cannot be empty or null.");

      PropertyInfo propInfoSrcObj = srcObject.GetType().GetProperty(propertyName);

      return (propInfoSrcObj != null);
    }


    /// --------------------------------------------------------------------
    /// <summary>
    /// Determine if a property exists in an object
    /// </summary>
    /// <param name="propertyName">Name of the property </param>
    /// <param name="srcObject">the object to inspect</param>
    /// <param name="ignoreCase">ignore case sensitivity</param>
    /// <returns>true if the property exists, false otherwise</returns>
    /// <exception cref="ArgumentNullException">if srcObject is null</exception>
    /// <exception cref="ArgumentException">if propertName is empty or null </exception>
    /// --------------------------------------------------------------------
    public static bool Exists(string propertyName, object srcObject, bool ignoreCase)
    {      
      if (!ignoreCase)
        return Exists(propertyName, srcObject);

      if (srcObject == null)
        throw new System.ArgumentNullException("srcObject");
      
      if ((propertyName == null) || (propertyName == String.Empty) || (propertyName.Length == 0))
        throw new System.ArgumentException("Property name cannot be empty or null.");


      PropertyInfo [] propertyInfos = srcObject.GetType().GetProperties();

      propertyName = propertyName.ToLower();
      foreach(PropertyInfo propInfo in propertyInfos)
      {
        if (propInfo.Name.ToLower().Equals(propertyName))
          return true;
      }
      return false;
    }
    }
}

   
    
    
    
  

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