Question

有没有简单的方法来禁用/灰显DataGridView？例如，在做

时

dgv.Enabled = false

dgv的外观不会改变。我看到有人追加以下内容：

dgv.forecolor = gray
dgv.columnheader.forecolor = gray

但是，这看起来很笨拙。还有更好的方法吗？

Answer 1

Private Sub DataGridView1_EnabledChanged(sender As Object, e As EventArgs) Handles DataGridView1.EnabledChanged
    If Not DataGridView1.Enabled Then
        DataGridView1.DefaultCellStyle.BackColor = SystemColors.Control
        DataGridView1.DefaultCellStyle.ForeColor = SystemColors.GrayText
        DataGridView1.ColumnHeadersDefaultCellStyle.BackColor = SystemColors.Control
        DataGridView1.ColumnHeadersDefaultCellStyle.ForeColor = SystemColors.GrayText
        DataGridView1.CurrentCell = Nothing
        DataGridView1.ReadOnly = True
        DataGridView1.EnableHeadersVisualStyles = False
    Else
        DataGridView1.DefaultCellStyle.BackColor = SystemColors.Window
        DataGridView1.DefaultCellStyle.ForeColor = SystemColors.ControlText
        DataGridView1.ColumnHeadersDefaultCellStyle.BackColor = SystemColors.Window
        DataGridView1.ColumnHeadersDefaultCellStyle.ForeColor = SystemColors.ControlText
        DataGridView1.ReadOnly = False
        DataGridView1.EnableHeadersVisualStyles = True
    End If
End Sub

Answer 2

简单回答你的问题：不，没有更好的方法。

MSDN对此主题大多保持沉默，但论坛却充满了热情。手动将背景颜色设置为灰色是大多数人在DGV上“禁用”外观的方式。

Answer 3

sveilleux2的示例，仅在C＃（标记）和高级（允许您将其放在任何名称和任意数量的DataGridViews上）

def execute():
    p = subprocess.Popen(params)
    return (p)

Answer 4

为标题设置灰色不会改变它。您还需要将EnableHeadersVisualStyles切换为false。

dgv.ForeColor = Color.Gray;
dgv.ColumnHeadersDefaultCellStyle.ForeColor = Color.Gray;
dgv.EnableHeadersVisualStyles = false;

Answer 5

我知道这是一个已经解决的问题但希望防止其他人失去1小时。

//C# version for buttons also. Inspired by sveilleux2.
private void DataGridView1_EnabledChanged(object sender, EventArgs e){
if (!DataGridView1.Enabled){
    DataGridView1.DefaultCellStyle.BackColor = SystemColors.Control;
    DataGridView1.DefaultCellStyle.ForeColor = SystemColors.GrayText;
    DataGridView1.ColumnHeadersDefaultCellStyle.BackColor = SystemColors.Control;
    DataGridView1.ColumnHeadersDefaultCellStyle.ForeColor = SystemColors.GrayText;
    //Disable two colums of buttons
    for (int i = 0; i < DataGridView1.RowCount; i++){
        DataGridViewButtonCell buttonCell = (DataGridViewButtonCell)DataGridView1.Rows[i].Cells[1];
        buttonCell.FlatStyle = FlatStyle.Popup;
        buttonCell.Style.ForeColor = SystemColors.GrayText;
        buttonCell.Style.BackColor = SystemColors.Control;
        DataGridViewButtonCell buttonCell_2 = (DataGridViewButtonCell)DataGridView1.Rows[i].Cells[6];
        buttonCell_2.FlatStyle = FlatStyle.Popup;
        buttonCell_2.Style.ForeColor = SystemColors.GrayText;
        buttonCell_2.Style.BackColor = SystemColors.Control;
    }

    DataGridView1.Columns[1].DefaultCellStyle.ForeColor = SystemColors.GrayText;
    DataGridView1.Columns[1].DefaultCellStyle.BackColor = SystemColors.Control;
    DataGridView1.ReadOnly = true;
    DataGridView1.EnableHeadersVisualStyles = false;
    DataGridView1.CurrentCell = null;
}else{
    DataGridView1.DefaultCellStyle.BackColor = SystemColors.Window;
    DataGridView1.DefaultCellStyle.ForeColor = SystemColors.ControlText;
    DataGridView1.ColumnHeadersDefaultCellStyle.BackColor = SystemColors.Window;
    DataGridView1.ColumnHeadersDefaultCellStyle.ForeColor = SystemColors.ControlText;
    DataGridView1.ReadOnly = false;
    DataGridView1.EnableHeadersVisualStyles = false;

    //Enable two colums of buttons
    for (int i = 0; i < DataGridView1.RowCount; i++){
        DataGridViewButtonCell buttonCell = (DataGridViewButtonCell)DataGridView1.Rows[i].Cells[1];
        buttonCell.FlatStyle = FlatStyle.Standard;
        DataGridViewButtonCell buttonCell_2 = (DataGridViewButtonCell)DataGridView1.Rows[i].Cells[6];
        buttonCell_2.FlatStyle = FlatStyle.Standard;
    }
}

}

Answer 6

我假设您希望datagridview向用户显示信息，并拒绝用户以任何方式进行修改。

private void IntializeDataGridView()
  {
    dataGridViewTest.ReadOnly = true;
   // you can code permissions or colors as well
    dataGridViewTest.AllowUserToAddRows = false;
    dataGridViewTest.AllowUserToDeleteRows = false;
    dataGridViewTest.AllowUserToOrderColumns = false;
    dataGridViewTest.BackgroundColor = Color.LightGray;
   //so on and so forth
  }

希望这会有所帮助。：

Answer 7

即使这个问题有点老，我也会在这里添加它 - 我通过覆盖控件上的Paint方法来绘制透明框，这样做与其他方法不同。我使用了从基类DataGridView继承的类，然后为OnPaint方法提供了一些额外的属性和覆盖。您也许可以在Paint事件中执行此操作，但对我来说，我已经创建了自己的控件版本。

这样做的好处是不会更改您已设置的任何行/单元格颜色/格式，只是想在禁用它时调暗控件。

只需设置DisableColor（例如Black）使其变暗（您也可以使用DisableColorAlpha属性更改Alpha通道）。否则它就像往常一样。

/// <summary>
/// Color used when the grid is disabled
/// </summary>
[Category("Appearance"), DefaultValue(typeof(Color), "Transparent"), Description("Color to use when the control is disabled (should be transparent)")]
public Color DisableColor { get; set; }

/// <summary>
/// Color used when the grid is disabled
/// </summary>
[Category("Appearance"), DefaultValue(50), Description("Alpha channel value for disabled color (0-255)")]
public int DisableColorAlpha { get; set; }

protected override void OnPaint(PaintEventArgs e)
{
    base.OnPaint(e);

    if (this.Enabled == false && DisableColor != Color.Transparent)
    {
        // paint a transparent box -- simulate disable
        using (Brush b = new SolidBrush(Color.FromArgb(DisableColorAlpha, DisableColor)))
        {
            e.Graphics.FillRectangle(b, e.ClipRectangle);
        }
    }
}

Answer 8

设置ReadOnly = false会改变外观吗？我认为可能会使数据报文的“可点击”部分变灰，例如列标题。但您仍然可以看到其中的数据。

禁用或灰显DataGridView

8 个答案: