10min Inactivity the application close C# winform

This is how to do it:

this.MouseMove += (sender, eventArgs) => { // actual parameter types are inferred by a compiler from the known event type
    // from here, call whatever you want, using eventArgs parameters
};

You can do the same using anonymous method even if you work with C# v.2 where lambda expression were not yet introduced:

this.MouseMove += deletage(object sender, MouseEventArgs eventArgs) { 
    // ...
};

[EDIT]

By the way, never ever use auto-generated names like "Form1_MouseMove" — they violate (good) Microsoft naming conventions; don't use underscore, numerics, etc. Always rename all such names to something semantic. What do you think refactoring engine for?

—SA