if语句出错 - 无法将类型隐式转换为'bool' [英] Error on if statement - cannot implicitly convert type to 'bool'

问题描述

我遇到转换类型的问题。我正在尝试这样的代码（最小的，详细的代码）：

I am having an issue converting type. I was trying code like this (minimal, detailed code later):

string cityType = "City1";
int listingsToSearch = 42;
if (cityType = "City1") // <-- error on this line
{
    listingsToSearch = 1;
}

但是if语句转换城市但我一直得到：

But "if" statement to convert the cities but I keep getting:

无法将类型'string'隐式转换为'bool'

cannot implicitly convert type 'string' to 'bool'

---

我想要实现的目标：我有一个搜索引擎，其中包含搜索文本的文本框和搜索位置的两个单选按钮（IE City1或City2）

---

What I'm trying to achieve: I have a search engine that has a textbox for the search text and two radio buttons for the search location ( IE City1 or City2 )

当我收到搜索文本和单选按钮时，它们是一个字符串形式

When I receive the search text and radio buttons they are in the form of a string

string thesearchtext, thecitytype;
thesearchtext = HttpContext.Current.Request.QueryString["s"].ToString();
thecitytype = HttpContext.Current.Request.QueryString["bt"].ToString();

当我收到城市单选按钮时，它们的格式为city1或city2。

When I receive the cities radiobutton they will be in the format of "city1" or "city2".

我需要做的是将城市单选按钮转换为int，以便我可以在搜索数据集中使用它们。我需要将city转换为整数 1 和city2到整数 2 。

What i need to do is convert the city radiobuttons into an int so that I can use them in my search dataset. I need to convert "city" to integer 1 and "city2" to integer 2.

我明白这可能是一个简单的类型转换但是我无法理解它出。到目前为止，的代码如果给出了上述错误：

I understand this is probably a simple type conversion however I just cannot figure it out. So far code with if gives me error above:

int listingsToSearch;
if (thecitytype = "City1")
{
    listingsToSearch = Convert.ToInt32(1);
}
else
{
    listingsToSearch = Convert.ToInt32(2);
}

推荐答案

c＃等于运算符是 == 和不是 = ：

if (thecitytype == "City1")

这篇关于if语句出错 - 无法将类型隐式转换为'bool'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！