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[ASP.NET] When you help build a website, System.InvalidCastException appears: Specified transfer...

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Posted on 11/17/2017 9:46:49 PM | | | |
Please help







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Posted on 11/18/2017 9:23:27 AM |
Try it with Convert.ToInt32().

1. int is suitable for conversion between simple data types, and the default integer of C# is int32 (bool type is not supported);

2、int. Parse(string sParameter) is a constructor, and the parameter type only supports string type.

3. Convert.ToInt32() is suitable for converting Object type to int type;

4. Convert.ToInt32() and int. Parse() nuances:

Unlike null, Convert.ToInt32(null) returns 0 without any exceptions, but int. Parse(null) will produce an exception.
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