学习之路二十一：设置DataGridView中的按钮为Disable

这个问题折腾很久了，网上找了半天了，结果问一个同事，同事给了一个地址让我看看，最后根据上面的介绍做好了，再次记录一下，o(∩_∩)o 哈哈

地址如下：http://msdn.microsoft.com/en-us/library/ms171619.aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-1

代码如下：

 1     public class DataGridViewDisableButtonColumn : DataGridViewButtonColumn
 2     {
 3         public DataGridViewDisableButtonColumn()
 4         {
 5             this.CellTemplate = new DataGridViewDisableButtonCell();
 6         }
 7     }
 8 
 9 
10     public class DataGridViewDisableButtonCell : DataGridViewButtonCell
11     {
12         private bool enabledValue;
13 
14         public bool Enabled
15         {
16             get
17             {
18                 return enabledValue;
19             }
20             set
21             {
22                 enabledValue = value;
23             }
24         }
25 
26         public string CommadText { get; set; }
27 
28         // Override the Clone method so that the Enabled property is copied. 
29         public override object Clone()
30         {
31             DataGridViewDisableButtonCell cell = (DataGridViewDisableButtonCell)base.Clone();
32             cell.Enabled = this.Enabled;
33             return cell;
34         }
35 
36         // By default, enable the button cell. 
37         public DataGridViewDisableButtonCell()
38         {
39             this.enabledValue = true;
40         }
41 
42         protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex,
43                                                 DataGridViewElementStates elementState, object value,
44                                                 object formattedValue, string errorText, DataGridViewCellStyle cellStyle,
45                                                 DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
46         {
47            
48             if (!this.enabledValue)
49             {
50                 // Draw the cell background, if specified. 
51                 if ((paintParts & DataGridViewPaintParts.Background) == DataGridViewPaintParts.Background)
52                 {
53                     SolidBrush cellBackground = new SolidBrush(cellStyle.BackColor);
54                     graphics.FillRectangle(cellBackground, cellBounds);
55                     cellBackground.Dispose();
56                 }
57 
58                 // Draw the cell borders, if specified. 
59                 if ((paintParts & DataGridViewPaintParts.Border) == DataGridViewPaintParts.Border)
60                 {
61                     PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle);
62                 }
63 
64                 // Calculate the area in which to draw the button.
65                 Rectangle buttonArea = cellBounds;
66                 Rectangle buttonAdjustment = this.BorderWidths(advancedBorderStyle);
67                 buttonArea.X += buttonAdjustment.X;
68                 buttonArea.Y += buttonAdjustment.Y;
69                 buttonArea.Height -= buttonAdjustment.Height;
70                 buttonArea.Width -= buttonAdjustment.Width;
71 
72                 // Draw the disabled button.                
73                 ButtonRenderer.DrawButton(graphics, buttonArea, PushButtonState.Disabled);
74 
75                 // Draw the disabled button text.  
76                 if (this.FormattedValue is String)
77                 {
78                     TextRenderer.DrawText(graphics, (string)this.FormattedValue, this.DataGridView.Font, buttonArea, SystemColors.GrayText);
79                 }
80             }
81             else
82             {
83                 // The button cell is enabled, so let the base class  
84                 // handle the painting. 
85                 base.Paint(graphics, clipBounds, cellBounds, rowIndex, elementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
86             }
87         }
88     }

 

在此记录一下！

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