TextBox1.Text += i & "+" & j & "=" & n & Chr(13) & Chr(10) 帮我解释一下 谢谢

if (textBox1.Text == 0) textBox1.Text = ; this.textBox1.Text += 1; TextBox1.Text = Mid(TextBox1.Text,1,Len(TextBox1.Text) - 那位朋友知道请回答一下, num = int.Parse(textBox1.Text); TextBox1.Text &= Space(4 - Len(Trim(sc(i,j)))) & sc(i, TextBox1.Text += i & + & j & = & n & Chr(13) & Chr(10) 帮我解释一下 谢谢 C#中textBox1.Text.Trim()==“” 和textBox1.Text.Trim()... private void button11_Click(object sender,EventArgs e){Button btn = (Button)sender;textBox1.Text = textBox1.Text + + btn.Text + ;}private void button12_Click(object sender,EventArgs e){Button btn = (Button)sender;textBox1.Text = textBox1.Text double currNum = double.Parse(textBox1.Text);表示什么? Config.RemoteIP = IPAddress.Parse(textBox1.Text);什么意思 C#中textBox1.Text.Trim()==“” 和textBox1.Text.Trim()==NULL有什么区别? ' + textBox1.Text.Trim() + '里的' 在C#中num1 = Convert.ToInt32(textBox1.Text.Trim());这句代码是什么意思啊?主要是不知道textBox1.Text.Trim()这句是什么意思 c#中 Double num1 = Convert.ToDouble(this.textBox1.Text.ToString())是什么意思, textBox1.Text.Trim()和textBox1.Text 区别请问这两个的区别 SqlConnection cn = new SqlConnection(conn); cn.Open();string str=update Grade set id=(' + TextBox1.Text.Trim() + ',sn=(' + TextBox2.Text.Trim() + ','+ TextBox3.Text.Trim() + ',' + TextBox4.Text.Trim() + ',' + TextBox5.Text.Trim() + ',' + private void button16_Click(object sender,EventArgs e){switch(s){case+:b = Convert.ToDouble(textBox1); c = a + b; textBox1.Text = c.ToString();break;case-:b = Convert.ToDouble(textBox1);c=a-b;textBox1.Text = c.ToString();break;case*:b = Convert 请讲解一下这段代码Dim a,b,c As Single ,i,As Integera = 2 :b = 3:i = 3 Doc =(a + b) / 3 :a = b :b =c :i = i + 1Loop Until c < 0.03TextBox1.Text = i - 1TextBox2.Text = c textbox1.text = dr.tostring(); 请指教!就是这句话要表达的意思,或者他的作用!