c#调整datagridview列的大小以适应控制

时间:2010-11-16 12:32:48

标签: c# winforms datagridview

我有一个数据网格视图,它与Winform上的面板对接并锚定。当我调整表单大小时,datagridview按预期调整大小,但列不会调整大小以适应datagridview。相反,我留下了Datagridview的背景颜色。

如何使用控件使列增长?

感谢。

3 个答案:

答案 0 :(得分:12)

您始终可以使用AutoSizeColumnsMode属性

  

此属性允许您配置控件,以便自动调整列宽以填充控件或适合单元格内容。只要控件的宽度发生变化,就会在填充模式下进行尺寸调整。

有关MSDN页面的更多信息。

答案 1 :(得分:10)

您可以将其中一列的AutoSizeMode属性设置为Fill。然后,此列将始终调整自身大小以填充其他列未使用的所有可用空间。

答案 2 :(得分:6)

private void dataGrid_SizeChanged(object sender, EventArgs e)
{
    ResizeGridColumns();
}

private void ResizeGridColumns()
{
    //get sum of non-resizable columns width
    int diffWidth = 0;
    foreach (DataGridViewColumn col in this.dataGrid.Columns)
    {
        if (col.Resizable == DataGridViewTriState.False && col.Visible) diffWidth += col.Width;
    }

    //calculate available width
    int totalResizableWith = this.dataGrid.Width - diffWidth;

    //resize column width based on previous proportions
    this.dataGrid.ColumnWidthChanged -= new DataGridViewColumnEventHandler(dataGrid_ColumnWidthChanged);
    for (int i = 0; i < this.colWidthRaport.Count; i++)
    {
        try
        {
            if (this.dataGrid.Columns[i].Resizable != DataGridViewTriState.False && this.dataGrid.Columns[i].Visible)
            {
                this.dataGrid.Columns[i].Width = (int)Math.Floor((decimal)totalResizableWith / this.colWidthRaport[i]);
            }
        }
        catch { }
    }
    this.dataGrid.ColumnWidthChanged += new DataGridViewColumnEventHandler(dataGrid_ColumnWidthChanged);
}

private void dataGrid_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs e)
{
    CalculateGridColWidthsRaport();
}

/// <summary>Calculates the proportions between grid width and column width</summary>
private void CalculateGridColWidthsRaport()
{
    //get sum of non-resizable columns width
    int diffWidth = 0;
    int colWidthsSum = 0;
    foreach (DataGridViewColumn col in this.dataGrid.Columns)
    {
        if (col.Visible)
        {
            colWidthsSum += col.Width;
            if (col.Resizable == DataGridViewTriState.False) diffWidth += col.Width;
        }
    }
    colWidthsSum += 24;

    //calculate available with
    int totalResizableWith = colWidthsSum - diffWidth;// this.dataGrid.Width - diffWidth;
    if (this.ParentForm.WindowState == FormWindowState.Maximized)
    {
        totalResizableWith = this.dataGrid.Width - diffWidth;
    }

    //calculate proportions of each column relative to the available width
    this.colWidthRaport = new List<decimal>();
    foreach (DataGridViewColumn col in this.dataGrid.Columns)
    {
        this.colWidthRaport.Add((decimal)totalResizableWith / (decimal)col.Width);
    }
}