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Auto-filter for Microsoft WPF DataGrid

, 29 Jan 2009 Eclipse
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.Reflection;

namespace Stepi.Collections.Filters
{

    /// <summary>
    /// Defines a string filter 
    /// </summary>
    public class StringFilter : Filter
    {
        /// <summary>
        /// The comparison mode
        /// </summary>
        private StringFilterMode _filterMode = StringFilterMode.Equals;

        /// <summary>
        /// value to search for
        /// </summary>
        private string _value;

        /// <summary>
        /// Initializes a new instance of the <see cref="StringFilter"/> class.
        /// </summary>
        /// <param name="propertyInfo">The property info.</param>
        /// <param name="filterMode">The filter mode.</param>
        public StringFilter(PropertyInfo propertyInfo, StringFilterMode filterMode)
            : base(propertyInfo)
        {
            _filterMode = filterMode;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="StringFilter"/> class.
        /// </summary>
        /// <param name="propertyInfo">The property info.</param>
        /// <param name="filterMode">The filter mode.</param>
        /// <param name="value">The value.</param>
        public StringFilter(PropertyInfo propertyInfo, StringFilterMode filterMode, string value)
            : this(propertyInfo, filterMode)
        {
            _value = value;
        }

        /// <summary>
        /// Gets or sets the mode.
        /// </summary>
        /// <value>The mode.</value>
        public StringFilterMode Mode
        {
            get
            {
                return _filterMode;
            }
            set
            {
                _filterMode = value;
                RaiseFilteringChanged();
            }
        }

        /// <summary>
        /// Gets or sets the value to look for.
        /// </summary>
        /// <value>The value.</value>
        public string Value
        {
            get
            {
                return _value;
            }
            set
            {
                if (_value != value)
                {
                    _value = value;
                    RaiseFilteringChanged();
                }
            }
        }

        /// <summary>
        /// Determines whether the specified target is a match.
        /// </summary>
        /// <param name="target">The target.</param>
        /// <returns>
        /// 	<c>true</c> if the specified target is a match; otherwise, <c>false</c>.
        /// </returns>
        public override bool IsMatch(object target)
        {
            if (target == null)
            {
                return false;
            }
            string toCompare = (string)PropertyInfo.GetValue(target, null);

            if (toCompare == null)
            {
                if (_filterMode == StringFilterMode.Equals)
                {
                    return _value == null;
                }
                return false;
            }

            switch (_filterMode)
            {
                case StringFilterMode.Contains:
                    return toCompare.Contains(_value);

                case StringFilterMode.StartsWith:
                    return toCompare.StartsWith(_value);

                case StringFilterMode.EndsWith:
                    return toCompare.EndsWith(_value);

                default:
                    return toCompare.Equals(_value);
            }
        }
    }
}

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

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About the Author

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

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