可编辑的ListView控件

创建可编辑 ListView 控件

ListView 控件是一个在 Windows 应用程序中使用频率比较高的一个，通常使用它来显示数据报表。很多情况下，我们不仅仅使用 ListView 来显示数据，还要求编辑其中的数据。但是 .NET 提供的 ListView 控件的编辑功能十分有限，只能编辑首列，编辑格式只能为文本框，等等，使用起来甚为不便。因此本人新写了一个类，扩充了其功能，客户程序员可以设置任何列的格式 ( 只读，编辑状态下文本框，编辑状态下组合框 ) ， 代码如下：

1． ALAN_ListViewColumnStyle 列风格枚举

///

1<summary>
2
3///  列风格枚举 
4
5/// </summary>

public enum ALAN_ListViewColumnStyle

{

ReadOnly, // 只读

EditBox, // 编辑状态下显示为文本框

ComboBox // 编辑状态下显示为组合框

};

2． ALAN_ColumnHeader 带有自定义风格的列

///

1<summary>
2
3///  列描述 
4
5/// </summary>

public class ALAN_ColumnHeader : ColumnHeader

{

private ALAN_ListViewColumnStyle cs; // 本列的风格

public ALAN_ColumnHeader() : base()

{

cs = ALAN_ListViewColumnStyle.ReadOnly;

}

public ALAN_ColumnHeader(ALAN_ListViewColumnStyle _cs)

{

cs = _cs;

}

public ALAN_ListViewColumnStyle ColumnStyle

{

get { return cs; }

set { cs = value;}

}

}

3． ALAN_EditListView 列表控件

///

1<summary>
2
3///  可编辑的  ListView  控件 
4
5/// </summary>

public class ALAN_EditListView : ListView

{

private ListViewItem m_currentLVItem;

private int m_nX=0;

private int m_nY=0;

private string m_strSubItemText ;

private int m_nSubItemSelected = 0 ;

private ComboBox[] m_arrComboBoxes = new ComboBox[20];

private System.Windows.Forms.TextBox editBox;

private Font m_fontComboBox;

private Font m_fontEdit;

private Color m_bgcolorComboBox;

private Color m_bgcolorEdit;

public ALAN_EditListView()

{

editBox = new System.Windows.Forms.TextBox();

this.ComboBoxFont = this.Font;

this.EditFont = this.Font;

this.EditBgColor = Color.LightBlue;

this.m_bgcolorComboBox = Color.LightBlue;

this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.SMKMouseDown);

this.DoubleClick += new System.EventHandler(this.SMKDoubleClick);

this.GridLines = true ;

editBox.Size = new System.Drawing.Size(0,0);

editBox.Location = new System.Drawing.Point(0,0);

this.Controls.AddRange(new System.Windows.Forms.Control[] {this.editBox});

editBox.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.EditOver);

editBox.LostFocus += new System.EventHandler(this.FocusOver);

editBox.AutoSize = true;

editBox.Font = this.EditFont;

editBox.BackColor = this.EditBgColor;

editBox.BorderStyle = BorderStyle.FixedSingle;

editBox.Hide();

editBox.Text = "";

}

public Font ComboBoxFont

{

get { return this.m_fontComboBox; }

set { this.m_fontComboBox = value;}

}

public Color ComboBoxBgColor

{

get { return this.m_bgcolorComboBox; }

set

{

this.m_bgcolorComboBox = value;

for(int i=0; i

  1<this.m_arrcomboboxes.length; !="null)" (columnindex<0="" (m_arrcomboboxes[i]="" alan_listviewcolumnstyle="" color="" columnindex="" columnindex,="" cs)="" editbgcolor="" editfont="" font="" get="" i++)="" if="" m_arrcomboboxes[i].backcolor="this.m_bgcolorComboBox;" public="" return="" set="" setcolumn(int="" this.editbox.backcolor="this.m_bgcolorEdit;" this.editbox.font="this.m_fontEdit;" this.m_bgcoloredit="value;" this.m_bgcoloredit;="" this.m_fontedit="value;" this.m_fontedit;="" void="" {="" ||="" }="">this.Columns.Count) 
  2
  3throw new Exception("Column index is out of range"); 
  4
  5((ALAN_ColumnHeader)Columns[columnIndex]).ColumnStyle = cs; 
  6
  7} 
  8
  9public void BoundListToColumn(int columnIndex, string[] items) 
 10
 11{ 
 12
 13if (columnIndex&lt;0 || columnIndex&gt;this.Columns.Count) 
 14
 15throw new Exception("Column index is out of range"); 
 16
 17if ( ((ALAN_ColumnHeader)Columns[columnIndex]).ColumnStyle != ALAN_ListViewColumnStyle.ComboBox) 
 18
 19throw new Exception("Column should be ComboBox style"); 
 20
 21ComboBox newbox = new ComboBox(); 
 22
 23for(int i=0; i<items.length; (="" )="" +="new" ,="" cmbbox="(ComboBox)sender;" cmbbox.hide();="" cmbkeypress(object="" cmbselected(object="" combobox="" cr="" e)="" e.keychar="27" esc="" i++)="" if="" int="" newbox.backcolor="this.ComboBoxBgColor;" newbox.dropdownstyle="ComboBoxStyle.DropDownList;" newbox.font="this.ComboBoxFont;" newbox.hide();="" newbox.items.add(items[i]);="" newbox.keypress="" newbox.location="new" newbox.lostfocus="" newbox.selectedindexchanged="" newbox.size="new" or="" press="" private="" sel="" sender="" system.drawing.point(0,0);="" system.drawing.size(0,0);="" system.eventargs="" system.eventhandler(this.cmbfocusover);="" system.eventhandler(this.cmbselected);="" system.windows.forms.control[]="" system.windows.forms.keypresseventargs="" system.windows.forms.keypresseventhandler(this.cmbkeypress);="" this.controls.addrange(new="" this.m_arrcomboboxes[columnindex]="newbox;" void="" {="" {newbox});="" ||="" }="">= 0 ) 
 24
 25{ 
 26
 27string itemSel = cmbBox.Items[sel].ToString(); 
 28
 29m_currentLVItem.SubItems[m_nSubItemSelected].Text = itemSel; 
 30
 31} 
 32
 33} 
 34
 35private void CmbFocusOver(object sender , System.EventArgs e) 
 36
 37{ 
 38
 39ComboBox cmbBox = (ComboBox)sender; 
 40
 41cmbBox.Hide() ; 
 42
 43} 
 44
 45private void EditOver(object sender, System.Windows.Forms.KeyPressEventArgs e) 
 46
 47{ 
 48
 49if ( e.KeyChar == 13 ) 
 50
 51{ 
 52
 53m_currentLVItem.SubItems[m_nSubItemSelected].Text = editBox.Text; 
 54
 55editBox.Hide(); 
 56
 57} 
 58
 59if ( e.KeyChar == 27 ) 
 60
 61editBox.Hide(); 
 62
 63} 
 64
 65private void FocusOver(object sender, System.EventArgs e) 
 66
 67{ 
 68
 69m_currentLVItem.SubItems[m_nSubItemSelected].Text = editBox.Text; 
 70
 71editBox.Hide(); 
 72
 73} 
 74
 75public  void SMKDoubleClick(object sender, System.EventArgs e) 
 76
 77{ 
 78
 79// Check the subitem clicked . 
 80
 81int nStart = m_nX ; //current mouse down X position 
 82
 83int spos = 0 ; 
 84
 85int epos = this.Columns[0].Width ; 
 86
 87for ( int i=0; i &lt; this.Columns.Count ; i++) 
 88
 89{ 
 90
 91if ( nStart &gt; spos &amp;&amp; nStart &lt; epos ) 
 92
 93{ 
 94
 95m_nSubItemSelected = i ; 
 96
 97break; 
 98
 99} 
100
101spos = epos ; 
102
103epos += this.Columns[i].Width; 
104
105} 
106
107m_strSubItemText = m_currentLVItem.SubItems[m_nSubItemSelected].Text ; 
108
109ALAN_ColumnHeader column = (ALAN_ColumnHeader)Columns[m_nSubItemSelected]; 
110
111if ( column.ColumnStyle == ALAN_ListViewColumnStyle.ComboBox ) 
112
113{ 
114
115ComboBox cmbBox = this.m_arrComboBoxes[m_nSubItemSelected]; 
116
117if (cmbBox == null) 
118
119throw new Exception("The ComboxBox control bind to current column is null"); 
120
121Rectangle r = new Rectangle(spos , m_currentLVItem.Bounds.Y , epos , m_currentLVItem.Bounds.Bottom); 
122
123cmbBox.Size  = new System.Drawing.Size(epos - spos , m_currentLVItem.Bounds.Bottom-m_currentLVItem.Bounds.Top); 
124
125cmbBox.Location = new System.Drawing.Point(spos , m_currentLVItem.Bounds.Y); 
126
127cmbBox.Show() ; 
128
129cmbBox.Text = m_strSubItemText; 
130
131cmbBox.SelectAll() ; 
132
133cmbBox.Focus(); 
134
135} 
136
137if ( column.ColumnStyle == ALAN_ListViewColumnStyle.EditBox ) 
138
139{ 
140
141Rectangle r = new Rectangle(spos , m_currentLVItem.Bounds.Y , epos , m_currentLVItem.Bounds.Bottom); 
142
143editBox.Size  = new System.Drawing.Size(epos - spos , m_currentLVItem.Bounds.Height); 
144
145editBox.Location = new System.Drawing.Point(spos , m_currentLVItem.Bounds.Y); 
146
147editBox.Show() ; 
148
149editBox.Text = m_strSubItemText; 
150
151editBox.SelectAll() ; 
152
153editBox.Focus(); 
154
155} 
156
157} 
158
159public void SMKMouseDown(object sender, System.Windows.Forms.MouseEventArgs e) 
160
161{ 
162
163m_currentLVItem = this.GetItemAt(e.X , e.Y); 
164
165m_nX = e.X ; 
166
167m_nY = e.Y ; 
168
169} 
170
171} 
172
173} 
174
175使用方法如下： 
176
177this.listView1 = new ALAN</items.length;></this.m_arrcomboboxes.length;>
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