.net 在 Datagridview 中启用和禁用单元格
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Enabling and disabling a cell in a Datagridview
提问by Victor Ionescu
I am using a DataGridView control for displaying some data. I need to enable some data and disable some data dynamically based on some values in the grid.
我正在使用 DataGridView 控件来显示一些数据。我需要根据网格中的某些值动态启用某些数据并禁用某些数据。
Can anyone tell me how to do it?
谁能告诉我怎么做？
回答by Victor Ionescu
To "disable" a cell, it must be read-only and grayed out somehow. This function enables/disables a DataGridViewCell:
要“禁用”一个单元格，它必须是只读的并且以某种方式变灰。此函数启用/禁用 DataGridViewCell：
/// <summary>
/// Toggles the "enabled" status of a cell in a DataGridView. There is no native
/// support for disabling a cell, hence the need for this method. The disabled state
/// means that the cell is read-only and grayed out.
/// </summary>
/// <param name="dc">Cell to enable/disable</param>
/// <param name="enabled">Whether the cell is enabled or disabled</param>
private void enableCell(DataGridViewCell dc, bool enabled) {
//toggle read-only state
dc.ReadOnly = !enabled;
if (enabled)
{
//restore cell style to the default value
dc.Style.BackColor = dc.OwningColumn.DefaultCellStyle.BackColor;
dc.Style.ForeColor = dc.OwningColumn.DefaultCellStyle.ForeColor;
}
else {
//gray out the cell
dc.Style.BackColor = Color.LightGray;
dc.Style.ForeColor = Color.DarkGray;
}
}
回答by Blorgbeard is out
You can set a particular row or cell to be read-only, so the user cannot change the value. Is that what you mean?
您可以将特定行或单元格设置为只读，因此用户无法更改该值。你是这个意思吗？
dataGridView1.Rows[0].ReadOnly = true;
dataGridView1.Rows[1].Cells[2].ReadOnly = true;
回答by Thamis
Step 1:
第1步：
type form load : -
For i = 0 to Datagridview.columns.count -1
if i <> 1 then //restricted columns, 'i' is Your column index
Datagridview.Columns(i).ReadOnly = True
end if
Next
Step 2
第2步
type Cellbeginedit
Datagridview.BeginEdit(True)
