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 { /// <summary> /// 为ListView增加数据绑定、查找和排序功能 /// </summary> ///
#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<intRowCount;i++) { item = new ListViewItem(m_objView[i][this.m_objMappings[0].MappingField].ToString()); for(int j=1;j<this.m_objMappings.Count;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<objDC.Count;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<listView.Items.Count;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<mappingFields.Length;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 } 
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