標籤轉換無效

Question

我有下面的代碼，它是倒數計時器

Dim countdown As Integer = SharpTextBox6.Text 
    Label1.Text = "Sending to " + "" + SharpTextBox4.Text + "" + "For" + countdown.ToString - 1 

問題是它說的價值「從字符串對話‘...’雙ISN」 ：T有效爲什麼它隱蔽入將翻一番，我怎麼能解決這個問題

Answer 1

你可以試試這個：

Label1.Text = "Sending to " + SharpTextBox4.Text + "For" + (countdown - 1).ToString 

Answer 2

MSDN：When you use the + operator, you may not be able to determine whether addition or string concatenation will occur. Use the & operator for concatenation to eliminate ambiguity and provide self-documenting code.

Label1.Text = "Sending to " & SharpTextBox4.Text & " For " & (countdown - 1)