difference between Convert.ToInt32 and (int)

Posted by balalakshmi on Stack Overflow See other posts from Stack Overflow or by balalakshmi
Published on 2009-10-22T17:40:45Z Indexed on 2010/03/08 2:12 UTC
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c#

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type-conversion

the following syntax throws an compile time error like

Cannot convert type 'string' to 'int'

string name=(Session["name1"].ToString());
int i = (int)name;

whereas the code below compiles and executes successfully

string name=(Session["name1"].ToString());
int i = Convert.ToInt32(name);

I would like to know
1) why the compile time error occurs in first code
2) what's the difference between the 2 code snippets

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