获取和设置 超链接和图片列

            SPSite mySite = new SPSite("serverUrl");
            SPWeb myWeb = mySite.OpenWeb("siteUrl");
            myWeb.AllowUnsafeUpdates = true;
            SPList myList = myWeb.Lists["ListName"];
            SPListItem myItem = myList.Items[0];

               //设置
            SPFieldUrlValue myUv = new SPFieldUrlValue();
            myUv .Description = "Your Description";
            myUv .Url = "Your Http Link";
            myItem["Your Url Field Name"] = myUv ;
            myItem.Update();

               //获取

        SPFieldUrlValue myUv = new SPFieldUrlValue(myItem["Your Url Field Name"] .ToString());

               String url=myUv. Url ;

               String Description =myuv.Description ;