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Auto-filter for Microsoft WPF DataGrid

, 29 Jan 2009
Allows auto filtering functionality for DataGrid columns.
WPFGridFilter.zip
WPFGridFilter
PowerCollections
PowerCollections.csproj.user
Properties
Stepi.Collections
bin
Filters
Properties
Stepi.UIFilters
bin
Initializers
Properties
Settings.settings
Themes
Test.GridSorting
bin
Debug
Test.GridFilter.vshost.exe
Properties
Settings.settings
using System;
using System.ComponentModel;
using System.Reflection;
using Stepi.Collections;
using Stepi.Collections.Filters;

namespace Stepi.UIFilters.Initializers
{
    /// <summary>
    /// 
    /// </summary>
    public class EqualFilterInitializer : IFilterViewInitializer
    {
        /// <summary>
        /// 
        /// </summary>
        private const string _filterName = "Equality";

        /// <summary>
        /// Determines whether the initializer can handle the specified property info.
        /// </summary>
        /// <param name="propertyInfo">The property info.</param>
        /// <returns>
        /// 	<c>true</c> if the specified property info is applying; otherwise, <c>false</c>.
        /// </returns>
        public bool IsApplying(PropertyInfo propertyInfo)
        {
            CheckArgument(propertyInfo);
            return true;
        }

        /// <summary>
        /// Gets the UI filter view.
        /// </summary>
        /// <param name="propertyInfo">The property info.</param>
        /// <param name="collection">The collection.</param>
        /// <returns></returns>
        public IFilterView GetFilterView(PropertyInfo propertyInfo, ICollectionView collection)
        {
            CheckArgument(propertyInfo);
            IFilter filter = GetFilter(propertyInfo);

            Type multiValuePresenterType = typeof(MultiValuePresentationModel<>).MakeGenericType(propertyInfo.PropertyType);
            IMultiValuePresentationModel model = (IMultiValuePresentationModel)Activator.CreateInstance(multiValuePresenterType, filter, FilterName, collection);

            MultiValueFilterView view = new MultiValueFilterView();
            view.Model = model;
            return view;
        }

        /// <summary>
        /// Gets the filter.
        /// </summary>
        /// <param name="propertyInfo">The property info.</param>
        /// <returns></returns>
        protected virtual IFilter GetFilter(PropertyInfo propertyInfo)
        {
            return (IFilter)Activator.CreateInstance(typeof(EqualFilter<>).MakeGenericType(propertyInfo.PropertyType), propertyInfo);
        }

        /// <summary>
        /// Gets the name of the filter.
        /// </summary>
        /// <value>The name of the filter.</value>
        protected virtual string FilterName
        {
            get { return _filterName; }
        }

        /// <summary>
        /// Checks if the argument is not null/
        /// </summary>
        /// <param name="propertyInfo">The property info.</param>
        private static void CheckArgument(PropertyInfo propertyInfo)
        {
            if (propertyInfo == null)
            {
                throw new ArgumentNullException("propertyInfo");
            }
        }
    }
}

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License

This article, along with any associated source code and files, is licensed under The Eclipse Public License 1.0

About the Author

Stefan Bocutiu
Software Developer (Senior) Lab49
United Kingdom United Kingdom
No Biography provided

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