How to resolve a failed conversion in C#?

In C#, when a type conversion fails, it usually throws an InvalidCastException. To resolve this issue, you can use one of the following methods:

1. as if

MyClass obj = someObj as MyClass;
if (obj != null)
{
    // 转换成功
}
else
{
    // 转换失败
}

1. The TryParse method is used for parseable types (such as numerical types), typically providing a way to attempt conversion and return a boolean value indicating whether the conversion was successful.

int result;
if (int.TryParse(inputString, out result))
{
    // 转换成功
}
else
{
    // 转换失败
}

1. The Convert class provides many static methods for type conversion. If the conversion fails, an exception will be thrown, which can be caught and handled in a try-catch block.

try
{
    int result = Convert.ToInt32(inputString);
    // 转换成功
}
catch (FormatException ex)
{
    // 转换失败
}

Using the above method can prevent throwing exceptions when type conversion fails, making the code more robust and reliable.