從C＃中的文本框中刪除最后一個字符

Question

我想要一個按鈕從文本框中刪除最后一個字符，就像Windows計算器中的向左箭頭按鈕

private void button15_Click(object sender, EventArgs e)
{

}

Answer 1

這個怎么樣？

private void button15_Click(object sender, EventArgs e)
{
    string sYourText = txtYourTextBox.Text;
    if (!String.IsNullOrEmpty(sYourText)){
       sYourText = sYourText.substring(0, sYourText.Length -1);
           txtYourTextBox.Text = sYourText;   
    }
}

Answer 2

private void button15_Click(object sender, EventArgs e)
{
    var text = txtSomething.Text;
    txtSomething.Text = text.Remove(text.Length - 1);
}

Answer 3

除非沒有其他要求，否則這就是您所需要的

var text = "something"; //your TextBox.Text
if (text.Length > 0)
    text = text.Remove(text.Length - 1);