Question

c#中winform的小问题

private void Form1_Formclosing(object sender,FormClosingEventArgs e);
DialogResult dr=MessageBox .Show ("是否关闭？","提示",MessageBoxButtons .YesNo ,MessageBoxIcon .Warning );
if( dr ==DialogResult .Yes)
{e.Cancer=false ;
}
else {
e.Cancel=true;
}

Answer 1

方法
private void Form1_Formclosing(object sender,FormClosingEventArgs e);
{//你缺少这个{
DialogResult dr=MessageBox .Show ("是否关闭？","提示",MessageBoxButtons .YesNo ,MessageBoxIcon .Warning );

if( dr ==DialogResult .Yes)

{e.Cancer=false ;

}

else {

e.Cancel=true;

}

Answer 2

private void Form1_Formclosing(object sender, FormClosingEventArgs e)
{
DialogResult dr = MessageBox.Show("是否关闭？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
if (dr == DialogResult.Yes)
{
e.Cancel = false;
}
else
{
e.Cancel = true;
}
}

Answer 3

语法格式错误
方法名后少了个{