如何在c＃中將變量輸出到一個接一個的富文本框？

Question

void ClearAllRichtextboxes() 
{ 
    richTextBox3.Clear(); 
    richTextBox5.Clear(); 
    richTextBox6.Clear(); 
    richTextBox9.Clear(); 
    richTextBox10.Clear(); 
} 

ClearAllRichtextboxes(); 

if (comboBox5.Text == "Primer") 
{ 
    richTextBox5.Text = "This is the number of primer tins" + primer.ToString(); 
    richTextBox6.Text = "This is the cost of the primer tins" + primercost.ToString(); 
} 

if (comboBox3.Text == "Matt") 
{ 
    richTextBox10.Text = "This is how many 2.5 tins of paint are needed: " + val44.ToString(); 
    richTextBox9.Text = "This is the matt cost" + valmatt.ToString(); 
} 

if (comboBox3.Text == "Vinyl ") 
{ 
    richTextBox10.Text = "This is how many 2.5 tins of paint are needed" + val44.ToString(); 
    richTextBox9.Text = "This is the of vinyl cost" + valmatt.ToString(); 
} 

if (comboBox3.Text =="Silk") 
{ 
    richTextBox10.Text = "This is how many 2.5 tins of paint are needed" + silkval.ToString(); 
    richTextBox9.Text = "This is the cost: " + valcostsilk.ToString(); 
} 

目前我正在將文本插入多個文本框，而不是我想在一個富文本框中輸出變量 - 通過附加字符串。

Answer 1

用新信息更新richTextBox.Text。如果您想將新字符串附加到已經存在的地方，請使用「+」。如果有幫助，您可以將該字符串保存爲自己的變量。關於字符串連接

richTextBox.Text = "First segment."; 
richTextBox.Text = richTextBox.Text + " Second segment."; 

更多信息：https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/strings/how-to-concatenate-multiple-strings

Answer 2

你可以做類似的字符串格式化，以幫助空間與空間的字符串。

像

richTextBox1.Text = String.Format("This is the number of A in B: {0}\r\n This is the number of X in Y: {1}", output1, output2); 

\ r \ n表示新行，你可以找到有關MSDN上的String.Format（）方法的詳細信息： https://msdn.microsoft.com/en-us/library/system.string.format(v=vs.110).aspx