Question

我是C＃和类的新手。我正在做一个datagridview的测试，用户可以在其中单击鼠标右键，然后弹出contextmenustrip。现在，我的问题如下。

我编写了代码，将文本添加到文本框中，如果文本不为空，则增加文本框。With help from this post.

private void TsmItem_Click(object sender, EventArgs e)
{
        int rowindex = dgvResults.CurrentCell.RowIndex;
        int columnindex = dgvResults.CurrentCell.ColumnIndex;
        double resultText;

        if (string.IsNullOrEmpty(Textbox.Text))
        {
            Textbox.Text = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
        }
        else
        {
            string selectedCell;
            selectedCell = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
            ResultText = Convert.ToDouble(Textbox.Text) + Convert.ToDouble(selectedCell);
            Textbox.Text = Convert.ToString(ResultText);
        }
}

有没有办法只让这段代码1次，并在每次需要时调用它。这样我只需要更改textboxes.Text？否则，我需要将此代码复制并粘贴10次以上。

我尝试过的事情

    private void TsmItem_Click(object sender, EventArgs e)
    {
        Textbox.Text = RightMouseClick(Textbox.Text);
    }


    private void RightMouseClick(string txtResult)
    {
        int rowindex = dgvResults.CurrentCell.RowIndex;
        int columnindex = dgvResults.CurrentCell.ColumnIndex;

        if (string.IsNullOrEmpty(txtResult))
        {
            txtResult = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
        }
        else
        {
            string selectedCell;
            double resultText;
            selectedCell = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
            resultaat = Convert.ToDouble(txtResult) + Convert.ToDouble(selectedCell);
            txtResult = Convert.ToString(resultText);
        }
    }

修复

        private string RightMouseClick(TextBox txtResult)
    {
        int rowindex = dgvResults.CurrentCell.RowIndex;
        int columnindex = dgvResults.CurrentCell.ColumnIndex;

        if (string.IsNullOrEmpty(txtResult.Text))
        {
            return txtResult.Text = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
        }
        else
        {
            string selectedCell;
            double resultaat;
            selectedCell = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
            resultaat = Convert.ToDouble(txtResult.Text) + Convert.ToDouble(selectedCell);
            return txtResult.Text = Convert.ToString(resultaat);
        }

    }

Answer 1

您可以将文本框用作参数

    private void RightMouseClick(TextBox txtBox)
    {
        int rowindex = dgvResults.CurrentCell.RowIndex;
        int columnindex = dgvResults.CurrentCell.ColumnIndex;

        if (string.IsNullOrEmpty(txtResult))
        {
            txtBox.Text = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
        }
        else
        {
            string selectedCell;
            double resultText;
            selectedCell = dgvResults.Rows[rowindex].Cells[columnindex].Value.ToString();
            resultaat = Convert.ToDouble(txtBox.Text) + Convert.ToDouble(selectedCell);
            txtBox.Text = Convert.ToString(resultText);
        }
    }

您还应确保还检查以确保文本框不是NULL

我该如何只编写一次并复制C＃

1 个答案: