Every server-side method that is called from the client-side, must be declared as “static”, and also has to be decorated with the [System.Web.Services.WebMethod] tag.
Default.aspx
Default.aspx
<script type='text/javascript'>
function DisplayMessage() {
PageMethods.Message("Amit",OnGetMessageSuccess, OnGetMessageFailure);
}
function OnGetMessageSuccess(result, userContext, methodName) {
alert(result);
}
function OnGetMessageFailure(error, userContext, methodName) {
alert(error.get_message());
}
function CallMe(src, dest) {
var ctrl = document.getElementById(src);
// call server side method
PageMethods.GetContactName(ctrl.value, CallSuccess, CallFailed, dest);
}
// set the destination textbox value with the ContactName
function CallSuccess(res, destCtrl) {
var dest = document.getElementById(destCtrl);
dest.value = res;
}
// alert message on some failure
function CallFailed(res, destCtrl) {
alert(res.get_message());
}
</script>
function DisplayMessage() {
PageMethods.Message("Amit",OnGetMessageSuccess, OnGetMessageFailure);
}
function OnGetMessageSuccess(result, userContext, methodName) {
alert(result);
}
function OnGetMessageFailure(error, userContext, methodName) {
alert(error.get_message());
}
function CallMe(src, dest) {
var ctrl = document.getElementById(src);
// call server side method
PageMethods.GetContactName(ctrl.value, CallSuccess, CallFailed, dest);
}
// set the destination textbox value with the ContactName
function CallSuccess(res, destCtrl) {
var dest = document.getElementById(destCtrl);
dest.value = res;
}
// alert message on some failure
function CallFailed(res, destCtrl) {
alert(res.get_message());
}
</script>
<body>
<form id='form1' runat='server'>
<asp:ScriptManager ID='ScriptManager1' runat='server' EnablePageMethods='true' />
<div>
<input type='submit' value='Get Message' onclick='DisplayMessage();return false;'
/>
<asp:Label ID="lblCustId1" runat="server" Text="Customer ID 1"></asp:Label>
<asp:TextBox
ID="txtId1" runat="server"></asp:TextBox>
<br />
<asp:TextBox ID="txtContact1" runat="server" BorderColor="Transparent" BorderStyle="None"
ReadOnly="True"></asp:TextBox><br />
</div>
</form>
</body>
<form id='form1' runat='server'>
<asp:ScriptManager ID='ScriptManager1' runat='server' EnablePageMethods='true' />
<div>
<input type='submit' value='Get Message' onclick='DisplayMessage();return false;'
/>
<asp:Label ID="lblCustId1" runat="server" Text="Customer ID 1"></asp:Label>
<asp:TextBox
ID="txtId1" runat="server"></asp:TextBox>
<br />
<asp:TextBox ID="txtContact1" runat="server" BorderColor="Transparent" BorderStyle="None"
ReadOnly="True"></asp:TextBox><br />
</div>
</form>
</body>
Default.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
txtId1.Attributes.Add("onblur", "javascript:CallMe('" + txtId1.ClientID + "', '" + txtContact1.ClientID + "')");
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
txtId1.Attributes.Add("onblur", "javascript:CallMe('" + txtId1.ClientID + "', '" + txtContact1.ClientID + "')");
}
}
[System.Web.Services.WebMethod]
public static string Message(string str)
{
return str;
}
[System.Web.Services.WebMethod]
public static string GetContactName(string custid)
{
if (custid == null || custid.Length == 0)
return String.Empty;
SqlConnection conn = null;
try
{
string connection = ConfigurationSettings.AppSettings["ConnectionString"];
conn = new SqlConnection(connection);
string sql = "Select sEmpFName from EMP_EmpPersonal where iEmployeeId = @CustID";
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.AddWithValue("CustID", custid);
conn.Open();
string contNm = Convert.ToString(cmd.ExecuteScalar());
if (contNm.Length > 0)
return contNm;
else
return "No record found.";
}
catch (SqlException ex)
{
return "error";
}
finally
{
conn.Close();
}
}
public static string Message(string str)
{
return str;
}
[System.Web.Services.WebMethod]
public static string GetContactName(string custid)
{
if (custid == null || custid.Length == 0)
return String.Empty;
SqlConnection conn = null;
try
{
string connection = ConfigurationSettings.AppSettings["ConnectionString"];
conn = new SqlConnection(connection);
string sql = "Select sEmpFName from EMP_EmpPersonal where iEmployeeId = @CustID";
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.AddWithValue("CustID", custid);
conn.Open();
string contNm = Convert.ToString(cmd.ExecuteScalar());
if (contNm.Length > 0)
return contNm;
else
return "No record found.";
}
catch (SqlException ex)
{
return "error";
}
finally
{
conn.Close();
}
}
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