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如何禁用 WindowsForms DataGridView 中单元格文本的省略号？

发布于 2024-07-20 19:22:59 字数 253 浏览 9 评论 0原文

我在 .NET 3.5 (Visual Studio 2008) WinForms 应用程序中有一个处于只读模式的 DataGridView。

细胞的宽度非常小。有些单元格包含一个短数字。现在，即使使用小字体，有时也会用省略号显示数字。例如“8...”而不是“88”。

有没有办法让文本流过标准 DataGridView 中的下一个单元格并避免省略号？

谢谢！

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撩动你心 2024-07-27 19:22:59

在设计器中更改 DataGridView 属性“RowDefaultCellStyle”-> 设置“换行模式”=“真”

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森罗 2024-07-27 19:22:59

处理 DataGridView 控件的 CellPainting 事件。
检查以下链接：

http://msdn.microsoft.com/en-us /library/hta8z9sz.aspx

请注意，当您绘制文本本身时，您需要自定义 StringFormat -

引用 MSDN 代码：

if (e.Value != null)
{
    e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
                    Brushes.Crimson, e.CellBounds.X + 2,
                    e.CellBounds.Y + 2, StringFormat.GenericDefault);
}

使用以下 StringFormat 对象而不是 StringFormat.GenericDefault ：

StringFormat strFormat = new StringFormat();
strFormat.Trimming = StringTrimming.None;

问候

handle the DataGridView control's CellPainting event.
Check the following link :

http://msdn.microsoft.com/en-us/library/hta8z9sz.aspx

Note that when you draw the text itself you need to customize the StringFormat -

quote from the MSDN code :

if (e.Value != null)
{
    e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
                    Brushes.Crimson, e.CellBounds.X + 2,
                    e.CellBounds.Y + 2, StringFormat.GenericDefault);
}

Use the following StringFormat object instead of StringFormat.GenericDefault :

StringFormat strFormat = new StringFormat();
strFormat.Trimming = StringTrimming.None;

Regards

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旧夏天 2024-07-27 19:22:59

我发现 KD2ND 此处给出的解决方案并不令人满意。对于如此小的更改完全重新实现单元格绘制似乎很愚蠢 - 处理列标题和列标题的绘制需要大量工作。也选择了行。幸运的是，有一个更巧妙的解决方案：

// you can also handle the CellPainting event for the grid rather than 
// creating a grid subclass as I have done here.
protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e)
{
    var isSelected = e.State.HasFlag(DataGridViewElementStates.Selected);

    e.Paint(e.ClipBounds, DataGridViewPaintParts.Background
        //| DataGridViewPaintParts.Border
        //| DataGridViewPaintParts.ContentBackground
        //| DataGridViewPaintParts.ContentForeground
        | DataGridViewPaintParts.ErrorIcon
        | DataGridViewPaintParts.Focus
        | DataGridViewPaintParts.SelectionBackground);

    using (Brush foreBrush = new SolidBrush(e.CellStyle.ForeColor),
        selectedForeBrush = new SolidBrush(e.CellStyle.SelectionForeColor))
    {
        if (e.Value != null)
        {
            StringFormat strFormat = new StringFormat();
            strFormat.Trimming = StringTrimming.Character;
            var brush = isSelected ? selectedForeBrush : foreBrush;

            var fs = e.Graphics.MeasureString((string)e.Value, e.CellStyle.Font);
            var topPos= e.CellBounds.Top + ((e.CellBounds.Height - fs.Height) / 2);

            // I found that the cell text is drawn in the wrong position
            // for the first cell in the column header row, hence the 4px
            // adjustment
            var leftPos= e.CellBounds.X;
            if (e.RowIndex == -1 && e.ColumnIndex == 0) leftPos+= 4;

            e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
                brush, leftPos, topPos, strFormat);
        }
    }

    e.Paint(e.ClipBounds, DataGridViewPaintParts.Border);
    e.Handled = true;
}

诀窍是让现有的“Paint”方法处理大部分单元格的绘制。我们只处理文本的绘制。边框是在文本之后绘制的，因为我发现否则有时文本会被绘制在边框上，这看起来很糟糕。

I found the solution given here by KD2ND to be unsatisfying. It seems silly to fully re-implement cell painting for such a small change - it's lots of work to handle painting of column headers & selected rows too. Luckily there is a neater solution:

// you can also handle the CellPainting event for the grid rather than 
// creating a grid subclass as I have done here.
protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e)
{
    var isSelected = e.State.HasFlag(DataGridViewElementStates.Selected);

    e.Paint(e.ClipBounds, DataGridViewPaintParts.Background
        //| DataGridViewPaintParts.Border
        //| DataGridViewPaintParts.ContentBackground
        //| DataGridViewPaintParts.ContentForeground
        | DataGridViewPaintParts.ErrorIcon
        | DataGridViewPaintParts.Focus
        | DataGridViewPaintParts.SelectionBackground);

    using (Brush foreBrush = new SolidBrush(e.CellStyle.ForeColor),
        selectedForeBrush = new SolidBrush(e.CellStyle.SelectionForeColor))
    {
        if (e.Value != null)
        {
            StringFormat strFormat = new StringFormat();
            strFormat.Trimming = StringTrimming.Character;
            var brush = isSelected ? selectedForeBrush : foreBrush;

            var fs = e.Graphics.MeasureString((string)e.Value, e.CellStyle.Font);
            var topPos= e.CellBounds.Top + ((e.CellBounds.Height - fs.Height) / 2);

            // I found that the cell text is drawn in the wrong position
            // for the first cell in the column header row, hence the 4px
            // adjustment
            var leftPos= e.CellBounds.X;
            if (e.RowIndex == -1 && e.ColumnIndex == 0) leftPos+= 4;

            e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
                brush, leftPos, topPos, strFormat);
        }
    }

    e.Paint(e.ClipBounds, DataGridViewPaintParts.Border);
    e.Handled = true;
}

The trick is to let the existing `Paint method handle the painting of most of the cell. We only handle painting the text. The border is painted after the text because I found that otherwise, the text would sometimes be painted over the border, which looks bad.

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