为什么我会得到参数1，不得与＆＃x27; ref＆＃x27传递。关键词？

发布于 2025-01-30 19:50:33 字数 618 浏览 1 评论 0原文

我试图通过引用从1到Form2传递字符串，要在Form2中修改字符串，并在Form1中使用更改的值。这是我的代码：

内部form1.cs：

 private void dataGridView1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
          
            string text = "aaa";
            Form frm2 = new Form2();
            frm2.ShowDialog(ref text); 
        }

内部form2.cs

public void ShowDialog(ref string von1)
        {
           
            textBox1.Text = von1;
            this.ShowDialog(); 
            von1 = textBox1.Text;
        }

我无法编译该项目，因为im遇到错误：

参数1可能不会与“ ref”关键字CS1615传递，

我在做什么错？

原文

I am trying to pass an string by reference from From1 to Form2, want to modify the string in Form2 and use the altered value in Form1.
This is my code:

Inside Form1.cs:

 private void dataGridView1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
          
            string text = "aaa";
            Form frm2 = new Form2();
            frm2.ShowDialog(ref text); 
        }

Inside Form2.cs

public void ShowDialog(ref string von1)
        {
           
            textBox1.Text = von1;
            this.ShowDialog(); 
            von1 = textBox1.Text;
        }

I'm not able to compile this project because im getting the error:

Argument 1 may not be passed with the 'ref' keyword CS1615

What am i doing wrong?

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