右键单击以选择 Datagridview 中的一行并显示一个菜单以将其删除

发布于 2024-09-05 17:27:05 字数 162 浏览 5 评论 0 原文

我的 DataGridView 中只有几列,而我的行中有数据。我在这里看到了一些解决方案,但我无法将它们组合起来!

只需右键单击一行,它将选择整行并显示一个菜单,其中包含删除该行的选项,当选择该选项时,它将删除该行。

我做了几次尝试,但都不起作用,而且看起来很乱。我应该怎么办?

I have few columns in my DataGridView, and there is data in my rows. I saw few solutions in here, but I can not combine them!

Simply a way to right-click on a row, it will select the whole row and show a menu with an option to delete the row and when the option selected it will delete the row.

I made few attempts but none is working and it looks messy. What should I do?

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评论(12

长途伴 2024-09-12 17:27:05

我终于解决了这个问题:

  • 在 Visual Studio 中,创建一个包含名为“DeleteRow”的项目的 ContextMenuStrip

  • 然后在 DataGridView 链接 ContextMenuStrip

使用下面的代码帮助我让它工作。

this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
this.DeleteRow.Click += new System.EventHandler(this.DeleteRow_Click);

这是最酷的部分

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if(e.Button == MouseButtons.Right)
    {
        var hti = MyDataGridView.HitTest(e.X, e.Y);
        MyDataGridView.ClearSelection();
        MyDataGridView.Rows[hti.RowIndex].Selected = true;
    }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    MyDataGridView.Rows.RemoveAt(rowToDelete);
    MyDataGridView.ClearSelection();
}

I finally solved it:

  • In Visual Studio, create a ContextMenuStrip with an item called "DeleteRow"

  • Then at the DataGridView link the ContextMenuStrip

Using the code below helped me getting it work.

this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
this.DeleteRow.Click += new System.EventHandler(this.DeleteRow_Click);

Here is the cool part

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if(e.Button == MouseButtons.Right)
    {
        var hti = MyDataGridView.HitTest(e.X, e.Y);
        MyDataGridView.ClearSelection();
        MyDataGridView.Rows[hti.RowIndex].Selected = true;
    }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    MyDataGridView.Rows.RemoveAt(rowToDelete);
    MyDataGridView.ClearSelection();
}
终止放荡 2024-09-12 17:27:05

为了这个问题的完整性,最好使用网格事件而不是鼠标。

首先设置数据网格属性:

SelectionMode 为 FullRowSelect

RowTemplate / ContextMenuStrip 到上下文菜单。

创建 CellMouseDown 事件:-

private void myDatagridView_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        int rowSelected = e.RowIndex;
        if (e.RowIndex != -1)
        {
            this.myDatagridView.ClearSelection();
            this.myDatagridView.Rows[rowSelected].Selected = true;
        }
        // you now have the selected row with the context menu showing for the user to delete etc.
    }
}

For completness of this question, better to use a Grid event rather than mouse.

First Set your datagrid properties:

SelectionMode to FullRowSelect
and
RowTemplate / ContextMenuStrip to a context menu.

Create the CellMouseDown event:-

private void myDatagridView_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        int rowSelected = e.RowIndex;
        if (e.RowIndex != -1)
        {
            this.myDatagridView.ClearSelection();
            this.myDatagridView.Rows[rowSelected].Selected = true;
        }
        // you now have the selected row with the context menu showing for the user to delete etc.
    }
}
胡大本事 2024-09-12 17:27:05
private void dgvOferty_CellContextMenuStripNeeded(object sender, DataGridViewCellContextMenuStripNeededEventArgs e)
    {
        dgvOferty.ClearSelection();
        int rowSelected = e.RowIndex;
        if (e.RowIndex != -1)
        {
            this.dgvOferty.Rows[rowSelected].Selected = true;
        }
        e.ContextMenuStrip = cmstrip;
    }

多田:D。最简单的方法时期。对于自定义单元格只需修改一点即可。

private void dgvOferty_CellContextMenuStripNeeded(object sender, DataGridViewCellContextMenuStripNeededEventArgs e)
    {
        dgvOferty.ClearSelection();
        int rowSelected = e.RowIndex;
        if (e.RowIndex != -1)
        {
            this.dgvOferty.Rows[rowSelected].Selected = true;
        }
        e.ContextMenuStrip = cmstrip;
    }

TADA :D. The easiest way period. For custom cells just modify a little.

傲世九天 2024-09-12 17:27:05

仅添加 mousedown 事件要容易得多:

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        var hti = MyDataGridView.HitTest(e.X, e.Y);
        MyDataGridView.Rows[hti.RowIndex].Selected = true;
        MyDataGridView.Rows.RemoveAt(rowToDelete);
        MyDataGridView.ClearSelection();
    }
}

这更容易。 初始化 mousedown 事件,如前所述:

this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);

当然,您必须在构造函数中

It's much more easier to add only the event for mousedown:

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        var hti = MyDataGridView.HitTest(e.X, e.Y);
        MyDataGridView.Rows[hti.RowIndex].Selected = true;
        MyDataGridView.Rows.RemoveAt(rowToDelete);
        MyDataGridView.ClearSelection();
    }
}

This is easier. Of cource you have to init your mousedown-event as already mentioned with:

this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);

in your constructor.

莫相离 2024-09-12 17:27:05

该问题的所有答案均基于鼠标单击事件。您还可以将 ContenxtMenuStrip 分配给您的 DataGridview,并检查当用户在 DataGridView 上使用 RightMouseButtons 时是否选择了一行code> 并决定是否要查看 ContenxtMenuStrip。您可以通过在 ContextMenuStrip 的打开事件

    private void MyContextMenuStrip_Opening(object sender, CancelEventArgs e)
    {
        //Only show ContextMenuStrip when there is 1 row selected.
        if (MyDataGridView.SelectedRows.Count != 1) e.Cancel = true;
    }

但是,如果您有多个上下文菜单条,每个条包含不同的选项,具体取决于在选择时,我自己也会采用鼠标点击的方法。

All the answers posed in to this question are based on a mouse click event. You can also assign a ContenxtMenuStrip to your DataGridview and check if there is a row selected when the user RightMouseButtons on the DataGridView and decide whether you want to view the ContenxtMenuStrip or not. You can do so by setting the CancelEventArgs.Cancel value in the the Opening event of the ContextMenuStrip

    private void MyContextMenuStrip_Opening(object sender, CancelEventArgs e)
    {
        //Only show ContextMenuStrip when there is 1 row selected.
        if (MyDataGridView.SelectedRows.Count != 1) e.Cancel = true;
    }

But if you have several context menu strips, with each containing different options, depending on the selection, I would go for a mouse-click-approach myself as well.

小瓶盖 2024-09-12 17:27:05

基于 @Data-Base 答案,在选择模式 FullRow 之前它不会工作

  MyDataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;

,但如果您需要使其在 CellSelect 模式下工作

 MyDataGridView.SelectionMode = DataGridViewSelectionMode.CellSelect;

 // for cell selection
 private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
 {
  if(e.Button == MouseButtons.Right)
    {
       var hit = MyDataGridView.HitTest(e.X, e.Y);
       MyDataGridView.ClearSelection();

       // cell selection
       MyDataGridView[hit.ColumnIndex,hit.RowIndex].Selected = true;
   }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
   int rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
   MyDataGridView.Rows.RemoveAt(rowToDelete);
   MyDataGridView.ClearSelection();
}

base on @Data-Base answer it will not work until make selection mode FullRow

  MyDataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;

but if you need to make it work in CellSelect Mode

 MyDataGridView.SelectionMode = DataGridViewSelectionMode.CellSelect;

 // for cell selection
 private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
 {
  if(e.Button == MouseButtons.Right)
    {
       var hit = MyDataGridView.HitTest(e.X, e.Y);
       MyDataGridView.ClearSelection();

       // cell selection
       MyDataGridView[hit.ColumnIndex,hit.RowIndex].Selected = true;
   }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
   int rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
   MyDataGridView.Rows.RemoveAt(rowToDelete);
   MyDataGridView.ClearSelection();
}
絕版丫頭 2024-09-12 17:27:05
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if(e.Button == MouseButtons.Right)
    {
        MyDataGridView.ClearSelection();
        MyDataGridView.Rows[e.RowIndex].Selected = true;
    }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = MyrDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    MyDataGridView.Rows.RemoveAt(rowToDelete);
    MyDataGridView.ClearSelection();
}
private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if(e.Button == MouseButtons.Right)
    {
        MyDataGridView.ClearSelection();
        MyDataGridView.Rows[e.RowIndex].Selected = true;
    }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = MyrDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    MyDataGridView.Rows.RemoveAt(rowToDelete);
    MyDataGridView.ClearSelection();
}
凉薄对峙 2024-09-12 17:27:05
private void dataGridView1_CellContextMenuStripNeeded(object sender, 
DataGridViewCellContextMenuStripNeededEventArgs e)
{            
    if (e.RowIndex != -1)
    {
        dataGridView1.ClearSelection();
        this.dataGridView1.Rows[e.RowIndex].Selected = true;
        e.ContextMenuStrip = contextMenuStrip1;
    }
}
private void dataGridView1_CellContextMenuStripNeeded(object sender, 
DataGridViewCellContextMenuStripNeededEventArgs e)
{            
    if (e.RowIndex != -1)
    {
        dataGridView1.ClearSelection();
        this.dataGridView1.Rows[e.RowIndex].Selected = true;
        e.ContextMenuStrip = contextMenuStrip1;
    }
}
江心雾 2024-09-12 17:27:05

这对我来说没有任何错误:

this.dataGridView2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown); 
this.dataGridView2.Click += new System.EventHandler(this.DeleteRow_Click);

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        var hti = dataGridView2.HitTest(e.X, e.Y);
        dataGridView2.ClearSelection();
        dataGridView2.Rows[hti.RowIndex].Selected = true;
    }

}


private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = dataGridView2.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    if (rowToDelete == -1) { }
    else 
    {
        dataGridView2.Rows.RemoveAt(rowToDelete);
        dataGridView2.ClearSelection();
    }
}

It is work for me without any errors:

this.dataGridView2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown); 
this.dataGridView2.Click += new System.EventHandler(this.DeleteRow_Click);

And this

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        var hti = dataGridView2.HitTest(e.X, e.Y);
        dataGridView2.ClearSelection();
        dataGridView2.Rows[hti.RowIndex].Selected = true;
    }

}


private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = dataGridView2.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    if (rowToDelete == -1) { }
    else 
    {
        dataGridView2.Rows.RemoveAt(rowToDelete);
        dataGridView2.ClearSelection();
    }
}
心意如水 2024-09-12 17:27:05

您还可以通过在事件代码中使用以下内容使这变得更简单:

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e) 
{     
    if (e.Button == MouseButtons.Right)     
    {         
        rowToDelete = e.RowIndex;
        MyDataGridView.Rows.RemoveAt(rowToDelete);         
        MyDataGridView.ClearSelection();     
    } 
}

You can also make this a little simpler by using the following inside the event code:

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e) 
{     
    if (e.Button == MouseButtons.Right)     
    {         
        rowToDelete = e.RowIndex;
        MyDataGridView.Rows.RemoveAt(rowToDelete);         
        MyDataGridView.ClearSelection();     
    } 
}
风情万种。 2024-09-12 17:27:05

请参阅此处,可以使用 DataGridView RowTemplate 属性来完成。

注意:此代码未经测试,但我以前使用过此方法。

// Create DataGridView
DataGridView gridView = new DataGridView();
gridView.AutoGenerateColumns = false;
gridView.Columns.Add("Col", "Col");

// Create ContextMenu and set event
ContextMenuStrip cMenu = new ContextMenuStrip();
ToolStripItem mItem = cMenu.Items.Add("Delete");
mItem.Click += (o, e) => { /* Do Something */ };           

// This makes all rows added to the datagridview use the same context menu
DataGridViewRow defaultRow = new DataGridViewRow();
defaultRow.ContextMenuStrip = cMenu;

就这样,就这么简单!

See here it can be done using the DataGridView RowTemplate property.

Note: This code isn't tested but I've used this method before.

// Create DataGridView
DataGridView gridView = new DataGridView();
gridView.AutoGenerateColumns = false;
gridView.Columns.Add("Col", "Col");

// Create ContextMenu and set event
ContextMenuStrip cMenu = new ContextMenuStrip();
ToolStripItem mItem = cMenu.Items.Add("Delete");
mItem.Click += (o, e) => { /* Do Something */ };           

// This makes all rows added to the datagridview use the same context menu
DataGridViewRow defaultRow = new DataGridViewRow();
defaultRow.ContextMenuStrip = cMenu;

And there you go, as easy as that!

别把无礼当个性 2024-09-12 17:27:05

我有一个新的解决方法可以得到相同的结果,但是代码更少。
对于 Winforms...该示例是葡萄牙语的
一步一步跟进

  1. 在表单中创建一个 contextMenuStrip 并创建一个项目
  2. 为这个 contextMenuStrip 签署一个事件点击(OnCancelarItem_Click)
    输入图片此处描述
  3. 在 gridview 上创建一个事件“UserDeletingRow”
    输入图片此处描述
    现在...您已经模拟用户按下 del 键

    <块引用>
    <块引用>

    你不会忘记在 gridview 上启用删除功能吧?!


输入图片此处描述
输入图片此处描述
最后...
输入图片此处描述

I have a new workaround to come in same result, but, with less code.
for Winforms... That's example is in portuguese
Follow up step by step

  1. Create a contextMenuStrip in your form and create one item
  2. Sign one event click (OnCancelarItem_Click) for this contextMenuStrip
    enter image description here
  3. Create a event 'UserDeletingRow' on gridview
    enter image description here
    and now... you've simulating on key press del from user

    you don't forget to enable delete on the gridview, right?!

enter image description here
enter image description here
and finally...
enter image description here

~没有更多了~
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