在RowHeaderSelect模式下仅复制选定的行，而不会复制未选定的行 [英] Copy only selected rows without not-selected rows between in RowHeaderSelect mode

问题描述

我正在寻找Windows窗体应用程序中C＃的可能性，以便能够：

I'm looking for a possibility in C# in Windows Forms Application to be able to:

1. 在a处选择多个完整行时间。


2. 在选定的行之间包括未选定的行。


3. 然后将它们复制到剪贴板，不留空格（留给未选定的行）

DataGridViewSelectionMode.FullRowSelect 不会削减它，因为我也需要能够选择独立的单元格我需要在行复制中启用与 DataGridViewSelectionMode.FullRowSelect 相同的行为，但对于 DataGridViewSelectionMode.RowHeaderSelect 模式。

The DataGridViewSelectionMode.FullRowSelect doesn't cut it as I also need to be able to select independent cells. I need to enable the same behaviour in row copying as the DataGridViewSelectionMode.FullRowSelect has but for the DataGridViewSelectionMode.RowHeaderSelect mode. Would that be possible to do?

谢谢。

推荐答案

首先，要执行此操作，我们将手动从默认复制结果中删除空白行。为此，我们将调用以下方法：

First, to do this we will be manually removing the empty lines from the default copy results. We will call the following method to do so:

private void StripEmptyFromCopy()
{
    string[] separated = Clipboard.GetText().Split('\n').Where(s => !String.IsNullOrWhiteSpace(s)).ToArray();
    string copy = String.Join("\n", separated);

    if (!String.IsNullOrEmpty(copy))
    {
        Clipboard.SetText(copy);
    }
}

解决方案和缺点

1. 我最初的想法是通过处理 DataGridView.KeyUp 来做到这一点事件，请检查用户输入的 Ctrl + C ：

1. My initial thought was to do this by handling the DataGridView.KeyUp event, checking the user input for Ctrl+C:

private void dataGridView1_KeyUp(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.C && (Control.Modifiers & Keys.Control) == Keys.Control)
    {
        StripEmptyFromCopy();
        e.Handled = true;
    }
}

• 如果<首先释放kbd> C 。如果先释放 Ctrl ，则空白行仍在剪贴板中。


• Works fine if C is released first. If Ctrl is released first, the empty rows are still in the Clipboard.

创建您的从 DataGridView 继承的自有类并覆盖 ProcessCmdKey ：

Create your own class inherting from DataGridView and override ProcessCmdKey:

public class CopyDataGridView : DataGridView
{
    protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
    {
        if (keyData == (Keys.Control | Keys.C))
        {
            StripEmptyFromCopy();
            return false;
        }

        return base.ProcessCmdKey(ref msg, keyData);
    }
}







• 返回<$ c调用 StripEmptyFromCopy 后，$ c> True 阻止剪贴板获取副本。返回 False 可以...但是随后被默认副本覆盖，我不知道在哪里发生。


• Returning True after calling StripEmptyFromCopy prevents the Clipboard from getting the copy. Returning False works... but then gets overridden by the default copy and I don't know where this occurs.

组合这些想法以捕获 Ctrl + C ，无论哪个键首先在中释放KeyUp 事件处理程序：

Combine these ideas to catch Ctrl+C no matter which key is released first in the KeyUp event handler:

public class CopyDataGridView : DataGridView
{
    public bool Copying { get; set; }

    protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
    {
        Copying = keyData == (Keys.Control | Keys.C);
        return base.ProcessCmdKey(ref msg, keyData);
    }
}

// And in the form:
copyDataGridView1.KeyUp += CopyDataGridView1_KeyUp;

private void CopyDataGridView1_KeyUp(object sender, KeyEventArgs e)
{
    if (copyDataGridView1.Copying)
    {
        StripEmptyFromCopy();
        copyDataGridView1.Copying = false;
        e.Handled = true;
    }
}







• 还有更多工作要做，但与选项1相比，结果一致。



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