Couldn't send and store String data to database through WCF - sql-server

Question

I have created a Windows 8 app, I have a table in SQL server database to store people's name, " [Name] VARCHAR (50)"
I have manage to send and save integer values to database, but when i modified my coding to store the string, it does not work, table data is empty. Please help!
itemDetail.html
<div>
<input id="join1" type="text" />
<button id="joinbtn">insert</button>
</div>
itemDetail.js
var joinButton = document.getElementById('joinbtn');
// Register Click event
joinButton.addEventListener("click", joinButtonClick, false);
function joinButtonClick() {
// Retrieve element
var baseURI2 = "http://localhost:45573/AddService.svc/Join";
var jointext = document.getElementById('join1').value;
WinJS.xhr({
type: "POST",
url: baseURI2,
headers: { "Content-type": "application/json" },
data: '{"namet":' + jointext + '}'
}).then(function complete(request) {
var resdata = request.responseText;
}, function error(er) {
var err = er.statusText;
})
}
AddService.svc.cs
public void Join(string namet)
{
string connectionString = System.Configuration.ConfigurationManager.
ConnectionStrings["Database1ConnectionString1"].ConnectionString;
SqlConnection con = new SqlConnection(connectionString);
string sql = "INSERT INTO Table2(Name) VALUES (#Name)";
SqlCommand cmd = new SqlCommand(sql, con);
cmd.Parameters.AddWithValue("#Name", namet);
try
{
con.Open();
int numAff = cmd.ExecuteNonQuery();
}
con.Close();
}
IAddService.cs
[OperationContract]
[WebInvoke(RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)]
void Join(string namet);
Thank you!

Answer 1

I think the problem may be in this line
data: '{"namet":' + jointext + '}'
Try changing it to
data: '{"namet":\'' + jointext + '\'}'