14

我在 .Net 应用程序（V4 C# VS2010）中有一个 DataGridView 并且想通过单击按钮将所有数据复制到剪贴板。没问题 -

private void copyToClipboard()
{
    dataGridView1.SelectAll();
    DataObject dataObj = dataGridView1.GetClipboardContent();
    if (dataObj != null)
        Clipboard.SetDataObject(dataObj);
}

问题是用户可能已经在 DataGrid 上选择了一些单元格、行等，我真的不想更改该选择。以上显然选择了一切。我可以 dataGridView1.ClearSelection(); 最后稍微好一点，但仍然没有达到要求。

我可以保存选定的单元格：

var mySelectedCells = dataGridView1.SelectedCells;

但是如何在复制后在 DataGrid 上重新选择那些选定的单元格？有没有一种简单的方法可以将选定的单元格集合返回到 DataGrid 中？也许有更好的方法可以首先将整个网格复制到剪贴板而不影响当前选定的单元格？

4

5 回答 5

14

我想如果您只想将单元格的内容表示为文本并将它们复制到剪贴板，以制表符分隔，您可以执行以下操作：

    var newline = System.Environment.NewLine;
    var tab = "\t";
    var clipboard_string = "";

    foreach (DataGridViewRow row in dataGridView1.Rows)
    {
         for (int i=0; i < row.Cells.Count; i++)
         {
              if(i == (row.Cells.Count - 1))
                   clipboard_string += row.Cells[i].Value + newline;
              else
                   clipboard_string += row.Cells[i].Value + tab;
         }
    }

    Clipboard.SetText(clipboard_string);

输出看起来与 的输出非常相似GetClipboardContent()，但要小心任何 DataGridViewImageColumns 或任何不是隐式字符串的类型。

编辑：安东尼是正确的，使用 StringBuilder 避免为每个连接分配一个新字符串。新代码：

    var newline = System.Environment.NewLine;
    var tab = "\t";
    var clipboard_string = new StringBuilder();

    foreach (DataGridViewRow row in dataGridView1.Rows)
    {
        for (int i = 0; i < row.Cells.Count; i++)
        {
            if (i == (row.Cells.Count - 1))
                clipboard_string.Append(row.Cells[i].Value + newline);
            else
                clipboard_string.Append(row.Cells[i].Value + tab);
        }
    }

    Clipboard.SetText(clipboard_string.ToString());
于 2012-05-09T23:44:42.340 回答
1

这是 C# 中的 VB 代码版本，带有复制标题和仅复制选定行的选项。

    private void CopyDataGridViewToClipboard(DataGridView dgv, bool includeHeaders = true, bool allRows = false) 
    {
        // copies the contents of selected/all rows in a data grid view control to clipboard with optional headers
        try
        {
            string s = "";
            DataGridViewColumn oCurrentCol = dgv.Columns.GetFirstColumn(DataGridViewElementStates.Visible);
            if (includeHeaders)
            {                   
                do
                {
                    s = s + oCurrentCol.HeaderText + "\t";
                    oCurrentCol = dgv.Columns.GetNextColumn(oCurrentCol, DataGridViewElementStates.Visible, DataGridViewElementStates.None);
                }
                while (oCurrentCol != null);
                s = s.Substring(0, s.Length - 1);
                s = s + Environment.NewLine;    //Get rows
            }
            foreach (DataGridViewRow row in dgv.Rows)
            {
                oCurrentCol = dgv.Columns.GetFirstColumn(DataGridViewElementStates.Visible);

                if (row.Selected || allRows)
                {
                    do
                    {
                        if (row.Cells[oCurrentCol.Index].Value != null) s = s + row.Cells[oCurrentCol.Index].Value.ToString();
                        s = s + "\t";
                        oCurrentCol = dgv.Columns.GetNextColumn(oCurrentCol, DataGridViewElementStates.Visible, DataGridViewElementStates.None);
                    }
                    while (oCurrentCol != null);
                    s = s.Substring(0, s.Length - 1);
                    s = s + Environment.NewLine;
                }                                      
            }
            Clipboard.SetText(s);
        }
        catch (Exception ex)
        {
            toolStripStatusLabel2.Text = @"Error: " + ex.Message;
        }
    }
于 2017-02-07T00:33:50.707 回答
1

您应该更改 DataGridView 的多选属性。这是代码：

private void copyToClipboard()
{
  dataGridView1.MultiSelect = True;
  dataGridView1.SelectAll();
  DataObject dataObj = dataGridView1.GetClipboardContent();
  if (dataObj != null)
  Clipboard.SetDataObject(dataObj);
}
于 2019-08-13T06:54:19.510 回答
0

我认为下面的方法完全可以满足您的需求。只需在按钮单击事件中使用 DataGridView 名称调用此方法。

Private Sub CopyDataGridViewToClipboard(ByRef dgv As DataGridView)
    Try
        Dim s As String = ""
        Dim oCurrentCol As DataGridViewColumn    'Get header
        oCurrentCol = dgv.Columns.GetFirstColumn(DataGridViewElementStates.Visible)
        Do
            s &= oCurrentCol.HeaderText & Chr(Keys.Tab)
            oCurrentCol = dgv.Columns.GetNextColumn(oCurrentCol, _
               DataGridViewElementStates.Visible, DataGridViewElementStates.None)
        Loop Until oCurrentCol Is Nothing
        s = s.Substring(0, s.Length - 1)
        s &= Environment.NewLine    'Get rows
        For Each row As DataGridViewRow In dgv.Rows
            oCurrentCol = dgv.Columns.GetFirstColumn(DataGridViewElementStates.Visible)
            Do
                If row.Cells(oCurrentCol.Index).Value IsNot Nothing Then
                    s &= row.Cells(oCurrentCol.Index).Value.ToString
                End If
                s &= Chr(Keys.Tab)
                oCurrentCol = dgv.Columns.GetNextColumn(oCurrentCol, _
                      DataGridViewElementStates.Visible, DataGridViewElementStates.None)
            Loop Until oCurrentCol Is Nothing
            s = s.Substring(0, s.Length - 1)
            s &= Environment.NewLine
        Next    'Put to clipboard
        Dim o As New DataObject
        o.SetText(s)
        Clipboard.SetDataObject(o, True)

    Catch ex As Exception
        ShowError(ex, Me)
    End Try
End Sub
于 2014-12-24T08:05:09.947 回答
0

DataGridView 列可以是可见的/不可见的，也可以按与创建它们的顺序不同的顺序显示。此代码同时兼顾：

public static void CopyGridViewToClipboard(DataGridView gvCopy)
    {
        if (gvCopy == null) return;
        StringBuilder s = new StringBuilder();

        int offset = gvCopy.ColumnHeadersVisible ? 1 : 0;
        int visibleColumnsCount = 0;

        //count visible columns and build mapping between each column and it's display position
        Dictionary<int, int> indexMapping = new Dictionary<int, int>();
        int currIndex = 0;
        int lastFoundMinDisplayIndex = -1;
        for (int j = 0; j < gvCopy.ColumnCount; j++)
        {
            //find min DisplayIndex >= currIndex where column is visible
            int minDisplayIndex = 100000;
            int minDisplayIndexColumn = 100000;
            for (int k = 0; k < gvCopy.ColumnCount; k++)
            {
                if ((gvCopy.Columns[k].Visible) && (gvCopy.Columns[k].DisplayIndex >= currIndex) && (gvCopy.Columns[k].DisplayIndex > lastFoundMinDisplayIndex))
                {
                    if (gvCopy.Columns[k].DisplayIndex < minDisplayIndex)
                    {
                        minDisplayIndex = gvCopy.Columns[k].DisplayIndex;
                        minDisplayIndexColumn = k;
                    }
                }
            }

            if (minDisplayIndex == 100000) break;

            indexMapping.Add(minDisplayIndexColumn, currIndex);

            lastFoundMinDisplayIndex = minDisplayIndex;
            currIndex++;
        }
        visibleColumnsCount = currIndex;

        //put data in temp array -- required to position columns in display order
        string[,] data = new string[gvCopy.RowCount + offset, visibleColumnsCount];

        if (gvCopy.ColumnHeadersVisible)
        {
            for (int j = 0; j < gvCopy.ColumnCount; j++)
            {
                if (gvCopy.Columns[j].Visible)
                {
                    data[0, indexMapping[j]] = gvCopy.Columns[j].HeaderText;
                }
            }
        }

        for (int i = 0; i < gvCopy.RowCount; i++)
        {
            for (int j = 0; j < gvCopy.ColumnCount; j++)
            {
                if (gvCopy.Columns[j].Visible)
                {
                    data[i + offset, indexMapping[j]] = gvCopy[j, i].FormattedValue.ToString();
                }
            }
        }

        //copy data
        for (int i = 0; i < gvCopy.RowCount + offset; i++)
        {
            for (int j = 0; j < visibleColumnsCount; j++)
            {
                s.Append(data[i, j]);

                s.Append("\t");
            }
            s.Append("\r\n");
        }
        Clipboard.SetDataObject(s.ToString());
    }
于 2019-03-27T21:20:14.037 回答