Question

用c#做一个简单的加法时,总是出现输入字符串错误,各位帮帮忙!感激不尽

if (addition.Checked)
{ addValues();}

private void addValues()
{
int lhs = int.Parse(lhsOperand.Text);
int rhs = int.Parse(rhsOperand.Text);
int outcome;
outcome = lhs + rhs;
expression.Text = lhsOperand.Text + " + " + rhsOperand.Text;
result.Text = outcome.ToString();
}

Answer 1

我用你的代码怎么没问题呢？
你是用winform 还是webform啊？把你整个页面代码发来看看
你是不是在文本框输入的不是数字啊
我是调试通过了
也是这个代码
private void addValues()
{
int lhs = int.Parse(lhsOperand.Text);
int rhs = int.Parse(rhsOperand.Text);
int outcome;
outcome = lhs + rhs;
expression.Text = lhsOperand.Text + " + " + rhsOperand.Text;
result.Text = outcome.ToString();
}

private void button1_Click(object sender, EventArgs e)
{
addValues();
}

Answer 2

outcome 是int形的, 怎么能 outcome.ToString(); 呢