Store data to sharepoint list through web part

Question

Hi friends
I am new to sharepoint and please help me. I have developed a web part through web user control and deployed the webpart in to sharepoint. My webpart contains few textboxes, dropdown, listbox and a submit button. When i click the button, details from the controls(textbox,dropdown,list) should be taken and stored in the sharepoint list. Is it Possible ? Could please help me by giving sample codes. Thanks in advance!