c#在外面尝试并捕获+变量

Question

如何在try-catch外获取变量x,y和z？

这是我的代码:

public static void mudarSpawn_1(GtaPlayer player, string coordenadas)
{
    char[] delimiterChars = { ' ', ',' };
    string text = coordenadas;
    string[] words = text.Split(delimiterChars);
    try
    {
         float x = float.Parse(words[0], System.Globalization.CultureInfo.InvariantCulture);
         float y = float.Parse(words[1], System.Globalization.CultureInfo.InvariantCulture);
         float z = float.Parse(words[1], System.Globalization.CultureInfo.InvariantCulture);
    }
    catch (Exception e)
    {
        player.SendClientMessage(Color.DarkOrange, "Os valores de x,y e z não foram inseridos de forma correcta, apenas podes usar numeros");
        player.SendClientMessage(Color.DarkOrange, "Ex: /mudarspawn3 6321.6 , 96321.38 , 66322.2 ou /mudarspawn3 6321.6 96321.38 66322.2");
    }

    MSGameMysql.mudarspawn1(x, y, z);
    player.SendClientMessage(Color.AliceBlue, "Acabaste de mudar o spawn 1 para: x='" + x + "' y='" + y + "' z='" + z + "'");
}

该

MSGameMysql.mudarspawn1(x, y, z);
player.SendClientMessage(Color.AliceBlue, "Acabaste de mudar o spawn 1 para: x='" + x + "' y='" + y + "' z='" + z + "'");

mudarspawn1()内的这个xy和z变量在x = 0 y = 0且z = 0时返回

我怎样才能解决这个问题？

我试着做一套但得到......但没有幸福的结局.

主要用途是:玩家写/ mudarspawn1 [coordenadas]

例如:/ mudarspawn1 656.32 65.21 698.1

但如果他们使用字符,程序将收到错误,我想向他们发送聊天,告诉他们只能使用数字.

Answer 1

您必须在try范围之前声明并初始化它们:

    float x = 0f;
    float y = 0f;
    float z = 0f;
    try
    {
         x = float.Parse(words[0], System.Globalization.CultureInfo.InvariantCulture);
         y = float.Parse(words[1], System.Globalization.CultureInfo.InvariantCulture);
         z = float.Parse(words[1], System.Globalization.CultureInfo.InvariantCulture);
    }
    catch (Exception e)
    {
        player.SendClientMessage(Color.DarkOrange, "Os valores de x,y e z não foram inseridos de forma correcta, apenas podes usar numeros");
        player.SendClientMessage(Color.DarkOrange, "Ex: /mudarspawn3 6321.6 , 96321.38 , 66322.2 ou /mudarspawn3 6321.6 96321.38 66322.2");
    }

    MSGameMysql.mudarspawn1(x, y, z);
    player.SendClientMessage(Color.AliceBlue, "Acabaste de mudar o spawn 1 para: x='" + x + "' y='" + y + "' z='" + z + "'");

但是,您最好float.TryParse()不要在此处查看并且不使用异常处理(这可能会给您带来不希望的结果).例如,

float x;
if (!float.TryParse(words[0], NumberStyles.AllowThousands || NumberStyles.Float, System.Globalization.CultureInfo.InvariantCulture, out x))
{
   // unable to parse words[0] as a float, handle it here.
}