private unsafe void button1_Click(object sender, EventArgs e)
{
string money=label1.Text;
money = label1.Text;
checksum5(money);
}
unsafe char checksum5(char* wert)
{
char[] tab_gew_2m ={ '0', '2', '4', '6', '8', '9', '1','3', '5', '7' };
char[] tab_gew_5p ={ '0', '5', '1', '6', '2', '7', '3', '8', '4', '9' };
char[] tab_gew_5m ={ '0', '5', '9', '4', '8', '3', '7', '2', '6', '1' };
char[] tab_gew_5m_inv ={'0','9','7','5','3','1','8','6','4','2'};
char checksum;
int n;
checksum = tab_gew_5p[*(wert++) - 0x30];//把字符转化成数字
checksum += tab_gew_2m[*(wert++) - 0x30];
checksum += tab_gew_5m[*(wert++) - 0x30];
checksum += tab_gew_5p[*(wert++) - 0x30];
checksum += tab_gew_2m[*wert - 0x30];
n=(10-(checksum%10))%10;
checksum = tab_gew_5m_inv[n];
return checksum;
} checksum5(money);调用时,老是报无法从“string”转换为“char*”请问应该如何调用呢.谢谢
{
string money=label1.Text;
money = label1.Text;
checksum5(money);
}
unsafe char checksum5(char* wert)
{
char[] tab_gew_2m ={ '0', '2', '4', '6', '8', '9', '1','3', '5', '7' };
char[] tab_gew_5p ={ '0', '5', '1', '6', '2', '7', '3', '8', '4', '9' };
char[] tab_gew_5m ={ '0', '5', '9', '4', '8', '3', '7', '2', '6', '1' };
char[] tab_gew_5m_inv ={'0','9','7','5','3','1','8','6','4','2'};
char checksum;
int n;
checksum = tab_gew_5p[*(wert++) - 0x30];//把字符转化成数字
checksum += tab_gew_2m[*(wert++) - 0x30];
checksum += tab_gew_5m[*(wert++) - 0x30];
checksum += tab_gew_5p[*(wert++) - 0x30];
checksum += tab_gew_2m[*wert - 0x30];
n=(10-(checksum%10))%10;
checksum = tab_gew_5m_inv[n];
return checksum;
} checksum5(money);调用时,老是报无法从“string”转换为“char*”请问应该如何调用呢.谢谢
money = label1.Text;
fixed(char* moneyPtr= money)
{
checksum5(moneyPtr);
}string是托管堆中的对象所以你要fix住才能使用
: 与“string.String(char*)”最匹配的重载方法具有一些无效参数
错误 CS1503: 参数“1”: 无法从“char”转换为“char*”
{
char n = checksum5(moneyPtr);
textBox1.Text = n.ToString;
}
无法将方法组“ToString”转换为非委托类型“string”。您是要调用方法吗?
c++ 里 char* 就是字符数组, C# char* 指的是一个字符的指针
{
char n = checksum5(moneyPtr);
string m=n.ToString;
textBox1.Text = m;
}
提示:无法将方法组“ToString”转换为非委托类型“string”。您是要调用方法吗?
n.ToString()