Question

我做了

private void richTextBox1_MouseDown(object sender, MouseEventArgs e)
 {
     if (e.Button == System.Windows.Forms.MouseButtons.Right)
     {
         MessageBox.Show("you got it!");
     }

 }

但我想要的是：

右键单击richTextBox中的一行时，将该行视为项目，因此菜单命令仅对我右键单击的特定行生效。像删除，粘贴，复制
如果我选择粘贴，它会将新文本粘贴到richTextBox的底部（结尾）。但是，如果我点击复制或删除它将考虑到我右键单击特定行。
为一行或一批行进行粘贴，并将它们添加为richTextBox底部（末尾）的行。

这就是我今天将文本作为行添加到richTextBox的方式。这些线是链接。 richTextBox中的每一行都是一个链接。我想要粘贴到richTextBox只是链接而不仅仅是文本。所以我粘贴到richTextBox的每个链接应该像我正在做的那样添加：for循环仅适用于构造函数。

for (int i = 0; i < lines.Count; i++)
            {
                RichTextBoxExtensions.AppendText(richTextBox1, "Ready: ", Color.Red, 8.25f);
                richTextBox1.AppendText(lines[i] + (i < lines.Count - 1 ? Environment.NewLine : String.Empty));
            }

            richTextBox1.AppendText(Environment.NewLine);

            for (int i = 0; i < newList.Count; i++)
            {
                RichTextBoxExtensions.AppendText(richTextBox1, "Ready: ", Color.Red, 8.25f);
                richTextBox1.AppendText(newList[i] + (i < newList.Count - 1 ? Environment.NewLine : String.Empty));
            }

行和newList是列表

这只是我如何添加指向richTextBox的链接的示例。因此，当我粘贴链接或链接时，应该像我这样做一样添加它们。

这就是richTextBox现在的样子：

Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101330&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101330&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101345&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101345&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101400&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101400&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101415&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101415&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101430&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101430&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101445&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101445&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101500&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101500&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101515&ir=true

因此，如果我现在正在粘贴链接，例如：http://microsoft.com 现在，richTextBox内容将如下所示：

Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101330&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101330&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101345&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101345&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101400&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101400&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101415&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101415&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101430&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101430&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101445&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101445&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101500&ir=true
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101500&ir=false
Ready: http://www.sat24.com/image2.ashx?region=is&time=201702101515&ir=true
Ready: http://www.microsoft.com

如果我粘贴多个链接，那么它会将链接添加到底部。

我认为这是从剪贴板追加文字的最快方式：

string newText = Clipboard.GetText();
richTextBox1.SelectionStart = richTextBox1.TextLength;
richTextBox1.SelectionLength = 0;
richTextBox1.SelectedText = newText;

但我希望将它添加到richTextBox的底部，并且格式为我正在使用Ready：

我应该在什么情况下这样做？如何在代码中添加上下文菜单并使用粘贴菜单？

更新

我现在尝试过这样的事情：

private void richTextBox1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Right)
            {
                var startIndex = richTextBox1.Text.IndexOf("Ready:") + "Ready:".Length;
                var length = richTextBox1.Text.IndexOf("Ready:", startIndex) - startIndex;

                int index = richTextBox1.SelectionStart;
                int line = richTextBox1.GetLineFromCharIndex(index);

                var code = richTextBox1.Text.Substring(startIndex + index, length - line - 1);

                label1.Text = code;
      }

我尝试添加两行：

int index = richTextBox1.SelectionStart;
int line = richTextBox1.GetLineFromCharIndex(index);

当我点击一条线时，这两行我正试图获得鼠标的光标位置。因此，它将像listView中的项一样解析鼠标所在的行文本。

但子字符串我不正确。

如果我这样做：

private void richTextBox1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Right)
            {
                var startIndex = richTextBox1.Text.IndexOf("Ready:") + "Ready:".Length;
                var length = richTextBox1.Text.IndexOf("Ready:", startIndex) - startIndex;

                var code = richTextBox1.Text.Substring(startIndex, length - 1);

                label1.Text = code;
            }
        }

它会让我在label1中始终是第一行链接。而不是单击鼠标光标位置的行。如果我点击第7行，那么我想在label1中看到第7行的全文。如果我点击第65行，那么在label1中查看第65行的全文。

如果我点击项目，就像在listView中一样。

Answer 1

你的问题非常简单，但它后面跟着很多不相关的东西。我只是继续尝试回答开头的问题，询问如何将上下文菜单添加到richtextbox。

    private void txtbx_text1_MouseUp(object sender, MouseEventArgs e)
    {
        if (e.Button != MouseButtons.Right)
        {
            return;
        }
        ContextMenu cm = new ContextMenu();//make a context menu instance
        MenuItem item = new MenuItem();//make a menuitem instance
        item.Text = "remove all";//give the item a header
        item.Click += DoNothing;//give the item a click event handler
        cm.MenuItems.Add(item);//add the item to the context menu
        item = new MenuItem();//recycle the menu item
        item.Text = "load from file";//give the item a header
        item.Click += DoNothing;//give the item a click event handler
        cm.MenuItems.Add(item);//add the item to the context menu
        item = new MenuItem();//recycle item into a new menuitem
        item.Text = "save list";//give the item a header
        item.Click += DoNothing;//give the item a click event handler
        cm.MenuItems.Add(item);//add the item to the context menu
        ((RichTextBox)sender).ContextMenu = cm;//add the context menu to the sender
        cm.Show(txtbx_text1, e.Location);//show the context menu
    }


    private void DoNothing(object sender, EventArgs e)
    {
        //doing nothing
        return;
    }

满足您的其他要求，以下内容可以帮助您。它需要一些爱，但前提是存在并且有效：

    private void txtbx_text1_MouseUp(object sender, MouseEventArgs e)
    {
        if (e.Button != MouseButtons.Right)
        {
            return;
        }
        ContextMenu cm = new ContextMenu();//make a context menu instance
        MenuItem item = new MenuItem();//make a menuitem instance
        item.Text = "remove line";//give the item a header
        item.Click += (sendingelement, eventargs) => RemoveLine(item, e);//give the item a click event handler
        cm.MenuItems.Add(item);//add the item to the context menu
        ((RichTextBox)sender).ContextMenu = cm;//add the context menu to the sender
        cm.Show(txtbx_text1, e.Location);//show the context menu
    }

    private void RemoveLine(object sender, MouseEventArgs e)
    {
        if (txtbx_text1.Text.Length == 0)
        {
            return;
        }
        int charNextToCursor = txtbx_text1.GetCharIndexFromPosition(e.Location);
        int lineNumFromChar = txtbx_text1.GetLineFromCharIndex(charNextToCursor);
        int firstCharOfLine = txtbx_text1.GetFirstCharIndexFromLine(lineNumFromChar);
        int lineLength = txtbx_text1.Lines[lineNumFromChar].Length;
        string firstchar = txtbx_text1.Text.Substring(firstCharOfLine, 1);
        //txtbx_text1.Text = txtbx_text1.Text.Remove(firstCharOfLine, lineLength);
        if (lineNumFromChar == 0)
        {
            if (txtbx_text1.Lines.Length > 1)
            {
                txtbx_text1.Text = txtbx_text1.Text.Remove(firstCharOfLine, lineLength + 1);
            }
            else
            {
                txtbx_text1.Text = txtbx_text1.Text.Remove(firstCharOfLine, lineLength);
            }

        }
        else
        {
            txtbx_text1.Text = txtbx_text1.Text.Remove(firstCharOfLine - 1, lineLength + 1);
        }

        ((MenuItem)sender).Parent.Dispose();

        return;
    }

如何将上下文菜单添加到richTextBox控件？

1 个答案: