> 
> **Possible Duplicate:**  
> 
> [How can I convert String to Int?](https://stackoverflow.com/questions/1019793/how-can-i-convert-string-to-int) 
> 
> 
> 

how can i change queryString value to an (int)

```
string str_id;
str_id = Request.QueryString["id"];
int id = (int)str_id;

```