C# datagridview 显示图片集
时间: 2023-11-23 18:54:19 浏览: 148
要在C#的DataGridView中显示图片集,可以使用自定义的DataGridView列,该列包含文本和图像。以下是实现此目的的步骤:
1.创建一个自定义列,继承自DataGridViewTextBoxColumn,并添加一个Image属性。
2.在该列的构造函数中,设置列的CellTemplate为自定义的DataGridViewImageAndTextCell。
3.在DataGridViewImageAndTextCell类中,重写Paint方法,以便在单元格中绘制图像和文本。
4.在DataGridView的CellFormatting事件中,检查当前单元格是否属于自定义列,并将Image属性设置为单元格的值。
下面是一个示例代码,演示如何实现这个功能:
```csharp
public class DataGridViewImageAndTextColumn : DataGridViewTextBoxColumn
{
public DataGridViewImageAndTextColumn()
{
this.CellTemplate = new DataGridViewImageAndTextCell();
}
public Image Image { get; set; }
}
public class DataGridViewImageAndTextCell : DataGridViewTextBoxCell
{
public override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
if (value != null && value != DBNull.Value)
{
Image image = (Image)value;
Rectangle imageBounds = new Rectangle(cellBounds.Location, new Size(image.Width, image.Height));
Rectangle textBounds = new Rectangle(cellBounds.Location + new Size(image.Width + 2, 0), new Size(cellBounds.Width - image.Width - 2, cellBounds.Height));
graphics.DrawImage(image, imageBounds);
TextRenderer.DrawText(graphics, formattedValue.ToString(), cellStyle.Font, textBounds, cellStyle.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.Left);
}
else
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
}
}
}
// 在DataGridView的CellFormatting事件中使用以下代码:
private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
if (dataGridView1.Columns[e.ColumnIndex] is DataGridViewImageAndTextColumn && e.Value != null && e.Value != DBNull.Value)
{
DataGridViewImageAndTextColumn column = (DataGridViewImageAndTextColumn)dataGridView1.Columns[e.ColumnIndex];
column.Image = (Image)e.Value;
}
}
```
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