using System;
using System.Data;
using System.Text;
using System.Globalization;
using System.Collections;
using System.Reflection;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.ComponentModel.Design.Serialization;
using System.Runtime.InteropServices;
namespace CommonFrame.OCX
{
///
/// 为ListView增加数据绑定、查找和排序功能
///
///
#region 枚举
public enum SortType
{
String,
Number,
Date
}
#endregion
#region 继承实现ListView列表类
public class ListViewEx : System.Windows.Forms.ListView
{
#region 列表项目所需的WIndows32 API定义
[StructLayout(LayoutKind.Sequential)]
private struct HDITEM
{
public Int32 mask;
public Int32 cxy;
[MarshalAs(UnmanagedType.LPTStr)]
public String pszText;
public IntPtr hbm;
public Int32 cchTextMax;
public Int32 fmt;
public Int32 lParam;
public Int32 iImage;
public Int32 iOrder;
};
[StructLayout(LayoutKind.Sequential) ]
public struct LVFINDINFO
{
public LVFI_FLAGS flags;
public string psz;
public IntPtr lParam;
public Point pt;
public VirtualKey vkDirection ;
}
public enum LVFI_FLAGS
{
LVFI_PARAM = 0x1,
LVFI_PARTIAL = 0x8,
LVFI_STRING = 0x2,
LVFI_WRAP = 0x20,
LVFI_NEARESTXY = 0x40,
}
public enum VirtualKey
{
VK_LEFT = 0x25,
VK_RIGHT = 0x27,
VK_UP = 0x26,
VK_DOWN = 0x28,
VK_HOME = 0x24,
VK_END = 0x23,
VK_PRIOR = 0x21,
VK_NEXT = 0x22
}
[DllImport("user32")]
static extern IntPtr SendMessage(IntPtr Handle, Int32 msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32", EntryPoint="SendMessage")]
static extern IntPtr SendMessageH(IntPtr Handle, Int32 msg, IntPtr wParam, ref HDITEM lParam);
[DllImport("user32.dll", EntryPoint="SendMessage", CharSet=CharSet.Auto)]
static extern int SendMessageL(System.IntPtr hWnd, Int32 msg, int wParam, ref LVFINDINFO lparam);
const Int32 HDI_WIDTH = 0x0001;
const Int32 HDI_HEIGHT = HDI_WIDTH;
const Int32 HDI_TEXT = 0x0002;
const Int32 HDI_FORMAT = 0x0004;
const Int32 HDI_LPARAM = 0x0008;
const Int32 HDI_BITMAP = 0x0010;
const Int32 HDI_IMAGE = 0x0020;
const Int32 HDI_DI_SETITEM = 0x0040;
const Int32 HDI_ORDER = 0x0080;
const Int32 HDI_FILTER = 0x0100; // 0x0500
const Int32 HDF_LEFT = 0x0000;
const Int32 HDF_RIGHT = 0x0001;
const Int32 HDF_CENTER = 0x0002;
const Int32 HDF_JUSTIFYMASK = 0x0003;
const Int32 HDF_RTLREADING = 0x0004;
const Int32 HDF_OWNERDRAW = 0x8000;
const Int32 HDF_STRING = 0x4000;
const Int32 HDF_BITMAP = 0x2000;
const Int32 HDF_BITMAP_ON_RIGHT = 0x1000;
const Int32 HDF_IMAGE = 0x0800;
const Int32 HDF_SORTUP = 0x0400; // 0x0501
const Int32 HDF_SORTDOWN = 0x0200; // 0x0501
const Int32 LVM_FIRST = 0x1000; // List 消息
const Int32 LVM_FINDITEMA = LVM_FIRST + 13;
const Int32 LVM_FINDITEMW = LVM_FIRST + 83;
const Int32 LVM_GETHEADER = LVM_FIRST + 31;
const Int32 HDM_FIRST = 0x1200; // Header 消息
const Int32 HDM_SETIMAGELIST = HDM_FIRST + 8;
const Int32 HDM_GETIMAGELIST = HDM_FIRST + 9;
const Int32 HDM_GETITEM = HDM_FIRST + 11;
const Int32 HDM_SETITEM = HDM_FIRST + 12;
#endregion
private string m_strDataFilter = "";
private int m_intSortColumn = -1;
private string m_strDataMember = "";
private CurrencyManager m_objDataManager = null;
private DataSet m_objData = null;
private DataView m_objView = null;
internal bool m_blnModifiedItem = true;
private CommonFrame.OCX.ListViewItemsCollection m_objItems ;
private CommonFrame.OCX.ColumnHeaderMappingCollection m_objMappings ;
public ListViewEx()
{
m_objItems = new CommonFrame.OCX.ListViewItemsCollection(this);
m_objMappings = new CommonFrame.OCX.ColumnHeaderMappingCollection();
}
#region 属性
[
CategoryAttribute("Data"),
BrowsableAttribute(true),
DescriptionAttribute("设置的数据成员"),
DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible),
DefaultValueAttribute("")
]
public string DataMember
{
get
{
return m_strDataMember;
}
set
{
m_strDataMember = value;
//this.SetDataMember();
}
}
[
CategoryAttribute("Data"),
BrowsableAttribute(true),
DescriptionAttribute("设置数据源"),
DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible),
DefaultValueAttribute(null)
]
public DataSet DataSource
{
get
{
return m_objData;
}
set
{
m_objData = value;
this.SetDataSource();
}
}
[
BrowsableAttribute(false),
DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Hidden)
]
public string DataFilter
{
get
{
return m_strDataFilter;
}
set
{
if (this.m_objData != null)
{
m_strDataFilter = value;
this.SetDataFilter();
}
else
{
m_strDataFilter = "";
}
}
}
[
CategoryAttribute("杂项"),
BrowsableAttribute(true),
DescriptionAttribute("列表项集合"),
DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content),
DefaultValueAttribute(null)
]
public CommonFrame.OCX.ListViewItemsCollection Items
{
get
{
return m_objItems;
}
}
[
CategoryAttribute("杂项"),
BrowsableAttribute(true),
DescriptionAttribute("列表标头与数据成员映射集合"),
DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content),
DefaultValueAttribute(null)
]
public CommonFrame.OCX.ColumnHeaderMappingCollection ColumnHeaderMappings
{
get
{
return m_objMappings;
}
set
{
m_objMappings = value;
}
}
public bool MultiSelect
{
get
{
return base.MultiSelect;
}
set
{
base.MultiSelect = value;
if ((this.DataSource != null) && (base.MultiSelect == true))
{
base.MultiSelect = false;
throw new Exception("已经设置了数据源DataSource，不能多选");
}
}
}
#endregion
#region 方法
// 填充数据
private void FillListViewItems()
{
ListViewItem item = null;
int intRowCount = this.m_objDataManager.Count ;
this.BeginUpdate();
//允许修改列表项目
this.m_blnModifiedItem = true;
//清除已经有的列表项目
if(this.Items.Count>0)
{
this.Items.Clear();
}
for(int i=0;i { item = new ListViewItem(m_objView[i][this.m_objMappings[0].MappingField].ToString()); for(int j=1;j { item.SubItems.Add(m_objView[i][this.m_objMappings[j].MappingField].ToString()); } this.Items.Add(item); } this.EndUpdate(); this.m_blnModifiedItem = false; } private void SetDataSource() { if (m_objData != null) { this.m_blnModifiedItem = true; //清空列表项目 this.Items.Clear(); //设置多选属性为单选 this.MultiSelect = false; this.m_blnModifiedItem = false; } } private void SetDataMember() { if ((m_objData == null) || (m_strDataMember == null) ||(m_strDataMember == "")) { this.Columns.Clear(); this.ColumnHeaderMappings.Clear(); return; } DataColumnCollection objDC = m_objData.Tables[m_strDataMember].Columns; if (objDC != null) { this.m_blnModifiedItem = true; this.Columns.Clear(); for( int i=0;i { ColumnHeader ch = this.Columns.Add(objDC[i].ColumnName.Trim(),60,HorizontalAlignment.Left); this.m_objMappings.Add(ch,objDC[i].ColumnName.Trim()); } this.m_blnModifiedItem = false; } } private void SetDataFilter() { if ( this.DataFilter != m_objView.RowFilter) { m_objView.RowFilter = this.DataFilter; } } //查找项目 public ListViewItem FindItem(ListView listView,string itemText,bool includeSubItemsInSearch) { if (listView.Items.Count == 0) { return null; } if (includeSubItemsInSearch == false) { for(int i=0;i { if (listView.Items[i].Text == itemText) { listView.Items[i].Selected = true; listView.Items[i].EnsureVisible(); return listView.Items[i]; } } } else { int intItemIndex = 0; int intSubItemIndex = 0; while (intItemIndex < listView.Items.Count) { intSubItemIndex = 0; ListViewItem objItem = listView.Items[intItemIndex]; while (intSubItemIndex < objItem.SubItems.Count) { if (itemText == objItem.SubItems[intSubItemIndex].Text) { objItem.Selected = true; objItem.EnsureVisible(); return objItem; } intSubItemIndex += 1; } intItemIndex += 1; } } return null; } #endregion #region 事件 //在选择列表项后，同步其他数据绑定的控件 protected override void OnSelectedIndexChanged(EventArgs e) { base.OnSelectedIndexChanged (e); if ((this.FocusedItem != null) && (m_objDataManager != null)) { m_objDataManager.Position = (int)this.FocusedItem.Index ; } } //获取CurrencyManager，以实现同其他数据绑定控件的同步 protected override void OnBindingContextChanged(EventArgs e) { base.OnBindingContextChanged (e); if ((this.Parent!= null) && (this.Parent.BindingContext != null) && (m_objData != null) && (m_strDataMember != null) && (m_objDataManager == null)) { m_objDataManager = (CurrencyManager)this.Parent.BindingContext[m_objData,m_strDataMember]; if (m_objDataManager != null) { this.m_objView = (DataView)m_objDataManager.List; m_objDataManager.PositionChanged += new EventHandler(DataSource_PositionChanged); m_objDataManager.ItemChanged += new ItemChangedEventHandler(DataSource_ItemChanged); } } } //排序 protected override void OnColumnClick(ColumnClickEventArgs e) { base.OnColumnClick (e); if(e.Column == m_intSortColumn) { if (this.Sorting == SortOrder.Ascending) { this.Sorting = SortOrder.Descending; } else { this.Sorting = SortOrder.Ascending; } } else { m_intSortColumn = e.Column; this.Sorting = SortOrder.Ascending; } //对于没有进行数据绑定时，使用ListView本身的排序功能 if (m_objDataManager == null) { this.ListViewItemSorter = new ListViewItemComparer(m_intSortColumn,this.Sorting,this.m_objMappings[m_intSortColumn].SortType); this.Sort(); } //对于进行数据绑定时的排序，使用DataView的排序功能 else { string strOrder = ""; if ( this.Sorting == SortOrder.Ascending) { strOrder = "Asc"; } else if (this.Sorting == SortOrder.Descending) { strOrder = "Desc"; } m_objView.Sort = this.m_objMappings[m_intSortColumn].MappingField + " " + strOrder; } } //当其他的数据绑定控件修改当前选项时，ListView同步 private void DataSource_PositionChanged(object sender,EventArgs e) { if (this.Items.Count > 0 ) { this.Items[m_objDataManager.Position].Selected = true; this.Items[m_objDataManager.Position].EnsureVisible(); } } //当数据源DataSet有内容时，自动填充ListView private void DataSource_ItemChanged(object sender ,ItemChangedEventArgs e) { if (this.DesignMode == false) { FillListViewItems(); } } #endregion } #endregion #region 排序管理类 public class ListViewItemComparer : System.Collections.IComparer { private int m_intColumn = 0; private SortType m_enmSortType = SortType.String; private SortOrder m_enmSortOrder = SortOrder.Ascending ; public ListViewItemComparer (int columnIndex,SortOrder sortOrder) { m_intColumn = columnIndex; m_enmSortOrder = sortOrder; } public ListViewItemComparer (int columnIndex,SortOrder sortOrder,SortType sortType) { m_intColumn = columnIndex; m_enmSortType = sortType; m_enmSortOrder = sortOrder; } int IComparer.Compare(object x, object y) { int intSort = 0; if(m_enmSortType == SortType.String) //字符排序 { intSort = String.Compare(((ListViewItem)x).SubItems[m_intColumn].Text.Trim(), ((ListViewItem)y).SubItems[m_intColumn].Text.Trim() ); } else if (m_enmSortType == SortType.Number) //数值排序 { try { System.Double firstNumber = Double.Parse(((ListViewItem)x).SubItems[m_intColumn].Text); System.Double secondNumber = Double.Parse(((ListViewItem)y).SubItems[m_intColumn].Text); if (firstNumber > secondNumber) { intSort = 1; } else if (firstNumber < secondNumber) { intSort = -1; } else { intSort = 0; } } catch { intSort = String.Compare(((ListViewItem)x).SubItems[m_intColumn].Text, ((ListViewItem)y).SubItems[m_intColumn].Text); } } else if (m_enmSortType == SortType.Date) //日期排序 { try { System.DateTime firstDate = DateTime.Parse(((ListViewItem)x).SubItems[m_intColumn].Text); System.DateTime secondDate = DateTime.Parse(((ListViewItem)y).SubItems[m_intColumn].Text); intSort = DateTime.Compare(firstDate, secondDate); } catch { intSort = String.Compare(((ListViewItem)x).SubItems[m_intColumn].Text, ((ListViewItem)y).SubItems[m_intColumn].Text); } } if(m_enmSortOrder == SortOrder.Descending) { return intSort*= -1; } else { return intSort; } } } #endregion #region 继承列表项目集合类。当设定DataSource属性时，不允许增加、插入、删除列表项目 public class ListViewItemsCollection : ListView.ListViewItemCollection { private CommonFrame.OCX.ListViewEx m_lvwBase = null; public ListViewItemsCollection(CommonFrame.OCX.ListViewEx listView):base(listView) { m_lvwBase = listView; } public int Count { get { return base.Count; } } public ListViewItem this[int index] { get { return base[index]; } } public int IndexOf(ListViewItem item) { return base.IndexOf(item); } public void Remove(System.Windows.Forms.ListViewItem item) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许删除项目"); } else { base.Remove(item); } } public void RemoveAt(int index) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许删除项目"); } else { base.RemoveAt(index); } } public System.Windows.Forms.ListViewItem Add(string text) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许添加项目"); } else { return base.Add(text); } } public System.Windows.Forms.ListViewItem Add(string text,int imageIndex) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许添加项目"); } else { return base.Add(text,imageIndex); } } public void Insert(int index,System.Windows.Forms.ListViewItem item) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许添加项目"); } else { base.Insert(index,item); } } public void Insert(int index,string text) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许添加项目"); } else { base.Insert(index,text); } } public void Insert(int index,string text,int imageIndex) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许添加项目"); } else { base.Insert(index,text,imageIndex); } } public void AddRange(System.Windows.Forms.ListViewItem[] values) { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许添加项目"); } else { base.AddRange(values); } } public void Clear() { if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) { throw new Exception("已经设置了DataSource，不允许清空项目"); } else { base.Clear(); } } } #endregion #region 列标头映射集合类,实现IList接口，对ColumnHeaderMapping类进行管理 public class ColumnHeaderMappingCollection : System.Collections.IList { private ArrayList m_arrColumnHearderMapping = new ArrayList(15); public ColumnHeaderMappingCollection() { } #region 实现IList接口 int IList.Add(object value) { return m_arrColumnHearderMapping.Add(value); } void IList.Clear() { m_arrColumnHearderMapping.Clear(); } bool IList.Contains(object item) { return m_arrColumnHearderMapping.Contains(item); } int IList.IndexOf(object value) { return m_arrColumnHearderMapping.IndexOf(value); } void IList.Insert(int index,object value) { m_arrColumnHearderMapping.Insert(index,value); } bool IList.IsFixedSize { get { return m_arrColumnHearderMapping.IsFixedSize; } } bool IList.IsReadOnly { get { return m_arrColumnHearderMapping.IsReadOnly; } } void IList.Remove(object obj) { m_arrColumnHearderMapping.Remove(obj); } void IList.RemoveAt(int index) { m_arrColumnHearderMapping.RemoveAt(index); } object IList.this[int index] { get { return m_arrColumnHearderMapping[index]; } set { } } bool System.Collections.ICollection.IsSynchronized { get { return m_arrColumnHearderMapping.IsSynchronized; } } object System.Collections.ICollection.SyncRoot { get { return m_arrColumnHearderMapping.SyncRoot; } } void System.Collections.ICollection.CopyTo(System.Array array,int arrayIndex) { m_arrColumnHearderMapping.CopyTo(array,arrayIndex); } #endregion public int Count { get { return m_arrColumnHearderMapping.Count; } } public ColumnHeaderMapping this[int index] { get { return (ColumnHeaderMapping)m_arrColumnHearderMapping[index]; } } public void Add(ColumnHeader columnHeader,string mappingField) { m_arrColumnHearderMapping.Add(new ColumnHeaderMapping(columnHeader,mappingField)); } public void Add(ColumnHeaderMapping ColumnHeaderMapping) { m_arrColumnHearderMapping.Add(ColumnHeaderMapping); } public void AddRange(ColumnHeaderMapping[] columnHeadMappings) { m_arrColumnHearderMapping.AddRange(columnHeadMappings); } public void AddRange(ColumnHeader[] columnHeaders,string[] mappingFields) { if (columnHeaders.Length != mappingFields.Length) { return; } for(int i=0;i { m_arrColumnHearderMapping.Add(new ColumnHeaderMapping(columnHeaders[i],mappingFields[i])); } } public void Remove(ColumnHeaderMapping ColumnHeaderMapping) { m_arrColumnHearderMapping.Remove(ColumnHeaderMapping); } public void Clear() { m_arrColumnHearderMapping.Clear(); } public int IndexOf(ColumnHeaderMapping columnHeaderMapping) { return m_arrColumnHearderMapping.IndexOf(columnHeaderMapping); } public void Insert(int index,ColumnHeaderMapping columnHeaderMapping) { m_arrColumnHearderMapping.Insert(index,columnHeaderMapping); } public void InsertRange(int index,ColumnHeaderMapping[] columnHeaderMappings) { m_arrColumnHearderMapping.InsertRange(index,columnHeaderMappings); } public bool Contains(ColumnHeaderMapping columnHeader) { return m_arrColumnHearderMapping.Contains(columnHeader); } public System.Collections.IEnumerator GetEnumerator() { return m_arrColumnHearderMapping.GetEnumerator(); } } #endregion #region 列表标头映射类，实现列表标头同数据库表字段的映射,定义列表标头在排序时使用的数据类型 [TypeConverterAttribute(typeof(ColumnHeaderMappingConvert))] public class ColumnHeaderMapping { private ColumnHeader m_objColumnHeader; private string m_strMappingField; private SortType m_enmSortType; public ColumnHeaderMapping() { m_objColumnHeader = new ColumnHeader(); m_strMappingField = ""; } public ColumnHeaderMapping(ColumnHeader columnHeader,string mappingField) { m_objColumnHeader = columnHeader; m_strMappingField = mappingField; } [ CategoryAttribute("杂项"), BrowsableAttribute(true), DescriptionAttribute("列表标头"), DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content), DefaultValueAttribute(null) ] public ColumnHeader ColumnHeader { get { return m_objColumnHeader; } set { m_objColumnHeader = value; } } [ CategoryAttribute("杂项"), BrowsableAttribute(true), DescriptionAttribute("映射字段"), DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible), DefaultValueAttribute("") ] public string MappingField { get { return m_strMappingField; } set { m_strMappingField = value; } } [ CategoryAttribute("杂项"), BrowsableAttribute(true), DescriptionAttribute("列表标头类型"), DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible), DefaultValueAttribute(SortType.String) ] public SortType SortType { get { return m_enmSortType; } set { m_enmSortType = value; } } } #endregion #region 对ColumnHeaderMapping进行转换，实现ColumnHeaderMapping类在IDE中的序列化 public class ColumnHeaderMappingConvert : TypeConverter { public ColumnHeaderMappingConvert() { } public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { return true; } return base.CanConvertTo(context, destinationType); } public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (value is ColumnHeaderMapping) { if (destinationType == typeof(InstanceDescriptor)) { object[] properites = new object[2]; Type[] types = new Type[2]; ColumnHeaderMapping chm = (ColumnHeaderMapping)value; types[0] = typeof(ColumnHeader); properites[0] = chm.ColumnHeader ; types[1] = typeof(string); properites[1] = chm.MappingField ; ConstructorInfo ci = typeof(ColumnHeaderMapping).GetConstructor(types); return new InstanceDescriptor(ci,properites); } } return base.ConvertTo(context, culture, value, destinationType); } } #endregion #region 继承列表标头集合类（由于继承列表标头集合类后，新增的列表标头不能显示在列表中，所以已经注释，暂时没有使用） // public class ColumnHeaderCollection : ListView.ColumnHeaderCollection // { // private ListView m_lvwBase = null; // // public ColumnHeaderCollection(CommonFrame.OCX.ListView listView) : base(listView) // { // m_lvwBase = listView; // } // // public void Remove(ColumnHeader item) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许删除项目"); // } // else // { // base.Remove(item); // } // } // // public void RemoveAt(int index) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许删除项目"); // } // else // { // base.RemoveAt(index); // // } // } // // public int Add(ColumnHeader value) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许添加项目"); // } // else // { // return base.Add(value); // } // } // // public ColumnHeader Add(string text,int width,HorizontalAlignment textAlign) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许添加项目"); // } // else // { // return base.Add(text,width,textAlign); // } // } // // public void Insert(int index,ColumnHeader item) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许添加项目"); // } // else // { // base.Insert(index,item); // } // } // // public void Insert(int index,string text,int width,HorizontalAlignment textAlign) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许添加项目"); // } // else // { // base.Insert(index,text,width,textAlign); // } // } // // public void AddRange(ColumnHeader[] values) // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许添加项目"); // } // else // { // base.AddRange(values); // } // } // // public void Clear() // { // if ((m_lvwBase.DataSource != null) && (m_lvwBase.m_blnModifiedItem == false)) // { // throw new Exception("已经设置了DataSource，不允许清空项目"); // } // else // { // base.Clear(); // } // } // // public ColumnHeader this[int index] // { // get // { // return base[index]; // } // } // } #endregion }