不出现打开文件对话框

发布于 2024-12-08 14:07:43 字数 846 浏览 0 评论 0原文

我有这个 DataGridView，我希望每次单击“从文件浏览...”时打开一个 openFileDialog。

在此处输入图像描述

到目前为止已完成，但不起作用。

private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
   string bbb = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
   if (bbb == "Browse From File...")
   {
       openFileDialog2.ShowDialog();
   }

也尝试过这些，但一无所获：

if (e.ColumnIndex.Equals = "Browse From File...")
if (dataGridView1.SelectedCells = "Browse From File...")   
if ((string)dataGridView1.SelectedCells[0].Value == "Browse From File...")
if (dataGridView1.Rows[1].Cells["Browse From File..."].Value.ToString() == "Browse From File...")
           {
               //openFileDialog2.ShowDialog();
           }

原文

I have this DataGridView and I want every time you click on the Browse From File... an openFileDialog to open.

enter image description here

Made this so far but it does not work.

private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
   string bbb = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
   if (bbb == "Browse From File...")
   {
       openFileDialog2.ShowDialog();
   }

Tried also these but nothing:

if (e.ColumnIndex.Equals = "Browse From File...")
if (dataGridView1.SelectedCells = "Browse From File...")   
if ((string)dataGridView1.SelectedCells[0].Value == "Browse From File...")
if (dataGridView1.Rows[1].Cells["Browse From File..."].Value.ToString() == "Browse From File...")
           {
               //openFileDialog2.ShowDialog();
           }

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海的爱人是光 2024-12-15 14:07:43

这是它应该的样子吗？

if (bbb.equals("Browse From File..."))

Is it what it's supposed to be?

if (bbb.equals("Browse From File..."))

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以歌曲疗慰 2024-12-15 14:07:43

一种解决方案是捕获显示数据网格中的控件的事件 (EditingControlsShowing) 并在组合框中添加 SelectionChanged 处理程序。

像这样的东西：

    private void dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        if (e.Control is ComboBox)
        {
            ComboBox cellComboBox = (ComboBox)e.Control;
            if (cellComboBox != null)
            {
                cellComboBox.SelectedIndexChanged += new EventHandler(cellComboBox_SelectedIndexChanged);
            }
        }
    }

    void cellComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        DataGridViewComboBoxEditingControl comboBox = sender as DataGridViewComboBoxEditingControl;
        if (comboBox != null)
        {
            if (String.Compare(comboBox.Text, "Browse From File...") == 0)
            {
                openFileDialog.ShowDialog();
            }
        }
    }

编辑

为了将事件处理程序添加到网格中：转到表单的设计视图并右键单击网格。单击上下文菜单中的属性。在属性窗口中，单击事件按钮（闪电图像）并搜索 EditingControlShowing 条目。双击空白处添加事件处理程序。在后面的页面代码中，您将看到一个与 *dataGridView1_EditingControlShowing* 类似的空方法，在该方法中复制/粘贴上述方法中的代码。除此之外，还将第二个方法 cellComboBox_SelectedIndexChanged 复制/粘贴到同一源文件中。

One solution would be to catch the event where the controls from the datagrid are shown (EditingControlsShowing) and add SelectionChanged handler on the combo box.

Something like this:

    private void dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        if (e.Control is ComboBox)
        {
            ComboBox cellComboBox = (ComboBox)e.Control;
            if (cellComboBox != null)
            {
                cellComboBox.SelectedIndexChanged += new EventHandler(cellComboBox_SelectedIndexChanged);
            }
        }
    }

    void cellComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        DataGridViewComboBoxEditingControl comboBox = sender as DataGridViewComboBoxEditingControl;
        if (comboBox != null)
        {
            if (String.Compare(comboBox.Text, "Browse From File...") == 0)
            {
                openFileDialog.ShowDialog();
            }
        }
    }

Edit

In order to add the event handler to the grid: Go to design view for your form and right click on the grid. Click properties in the context menu. In the properties window click on the Events button (the lightning image) and search the EditingControlShowing entry. Double click the empty space to add the event handler. In the page code behind you'll see an empty method similar with *dataGridView1_EditingControlShowing*, in that method copy/paste the code from the above method. Beside that also copy/paste in the same source file the second method cellComboBox_SelectedIndexChanged.

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