在方法之间共享变量

问题描述：

这可能是一个愚蠢的问题，但我将如何去与另一种方法共享变量ammount和价格？在方法之间共享变量

[Command("sellweed")] 
public void sellWeed(Client sender, Client target, int ammount, int price) 
{ 
    API.sendChatMessageToPlayer(sender, "~b~You have offered " + ammount + 
     " Weed to " + target + "for $" + price + ", wait for him to accept."); 
    API.sendChatMessageToPlayer(target, "~b~" + sender + " has offered you " + ammount + 
     " Weed for a price of $" + price + ", type /acceptweed to buy."); 
} 

[Command("acceptweed")] 
public void acceptWeed(Client player) 
{ 
    checkPlayerName = API.getPlayerName(player); 
    string checkMoney = "SELECT Wallet FROM [playerInfo] WHERE PlayerName='" + 
     checkPlayerName + "'"; 
    con.Open(); 
    SqlCommand checkMoneyCMD = new SqlCommand(checkMoney, con); 
    int playerMoney = Convert.ToInt32(checkMoneyCMD.ExecuteScalar()); 
    con.Close(); 
    if (playerMoney < price) 
    { 
     API.sendChatMessageToPlayer(player, "You don't have enough money."); 
    } 
    else 
     API.sendChatMessageToPlayer(player, "You received " + ammount + " of weed."); 
}

金额只有一个'm' –

定义了价格（即acceptWeed如何访问）？ –

答

您需要制造一些获得者。
ps lol ammount实际拼写量。

把它放在变量的函数中。

public int getAmmount(){ 
     return ammount; 
} 
public int getPrice(){ 
     return price; 
}

然后在功能要检索的值从你会使用：

var amount = sellweed.getAmmount();

这将变量量ammount的价值是在sellweed。 getPrice也一样。

var price = sellweed.getPrice();

难道你不应该是方法名称的资本吗？命名标准和所有.. –

@JoshuaSmith他没有在代码中大写它。我只是为了匹配他所说的。 –

答

只要确保你执行这项业务远离警察。如果不在托管环境中执行，可能会导致严重的违规操作异常。

这不是一个答案，应该留在评论中。另外它现在在几个州是合法的...... :) –

如何将变量值存储在静态成员中？ –

答

正常情况下，值通过参数列表从一个方法传递到另一个方法。就像您当前正在将Client player传递给acceptWeed方法一样，您也可以将price和amount传递给该方法。

您未显示调用此方法的位置，但推测它来自某处知道price和amount的地方。

此外，你应该养成使用参数化查询的习惯。您正在使用的当前语法可能会让您打开SQL注入攻击。我也在回答中包含了这一点。你可以阅读更多关于它HERE。

[Command("acceptweed")] 
public void acceptWeed(Client player, int amount, int price) 
{ 
    checkPlayerName = API.getPlayerName(player); 

    string checkMoney = "SELECT Wallet FROM [playerInfo] WHERE PlayerName = @playerName"; 

    using (SqlConnection con = new SqlConnection(/* connection info */)) 
    using (SqlCommand command = new SqlCommand(checkMoney, con)) 
    { 
     var playerName = new SqlParameter("playerName", SqlDbType.NVarChar); 
     playerName.Value = API.getPlayerName(player); 
     command.Parameters.Add(playerName); 

     int playerMoney = Convert.ToInt32(checkMoneyCMD.ExecuteScalar()); 
    } 

    if (playerMoney < price) 
    { 
     // It might be nice to tell the player how much money they have 
     API.sendChatMessageToPlayer(player, "You don't have enough money."); 
    } 
    else 
    { 
     // Do something to subtract 'price' from 'playerMoney' 
     // Also do something to subtract 'amount' from the seller's stash 
     // And do something to add 'amount' to the buyer's stash 
     API.sendChatMessageToPlayer(player, "You received " + amount + " of weed."); 
    } 
}

在方法之间共享变量

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