Set Item level permission in Sharepoint Document Library

In Documnet library, we can not set item level permission by using Sharepoint Document Library Settings (unlike sharepoint List Settings). There is a very simple code snippet which does the same for us.

Code snippet

using (SPSite spSiteObje = new SPSite("http://SiteColName/Subsite"))
{
using (SPWeb spObjWeb = site.OpenWeb())
{
SPList spObjDocLib = web.Lists["MyDocLib"];
spObjDocLib.ReadSecurity = 2;
spObjDocLib.WriteSecurity = 2;
spObjDocLib.Update();
}
}