Insert into SharePoint List in Client Object Model in a WebPart

SPWeb currentWeb = SPContext.Current.Web;
ClientContext ctx = new ClientContext(currentWeb.Url);
List loginList = ctx.Web.Lists.GetByTitle("Login");
ListItemCreationInformation newRecord = new
ListItemCreationInformation();
Microsoft.SharePoint.Client.ListItem item =
loginList.AddItem(newRecord);
item["Title"] = txtUserName.Text;
item["Password"] = txtPassWord.Text;
item.Update();
ctx.ExecuteQuery();
txtUserName.Text = "";
txtPassWord.Text = "";
strError += "Insertion Successful";