客户端访问WebService
客户端访问WebService和后台访问WebService没什么不同，注意的地方是要在ScriptManager中添加
<Services>
<asp:ServiceReference Path=""/>
</Services>
path 指向服务文件，使用web服务文件时在js函数中调用相关方法。
例子：
客户端：
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/FullType.asmx"/>
</Services>
</asp:ScriptManager>
<input type="button" value="salarydouble" onclick="salaryDouble()" />
<input type="button" value="Reversal" onclick="ReversalList([1,2,3,4,5])" />
<input type="button" value="getEmployee" onclick="GetEmployees()" />
</div>
<script type="text/javascript">
function salaryDouble() {
var employee = new Object();
employee.FirstName = "Dan";
employee.LastName = "Che";
employee.Salary = 1000;
Demo1MethodChongZai.FullType.SalaryDouble(employee, SalarySuccessfully);
}
function SalarySuccessfully(result) {
alert(String.format("FirstName:{0}
LastName:{1}
Salary:{2}
FullName:{3}
", result.FirstName, result.LastName, result.Salary, result.FullName));
}
function ReversalList(list) {
Demo1MethodChongZai.FullType.reversalList(list,RversalSuccessfully);
}
function RversalSuccessfully(result) {
alert(result);
}
function GetEmployees() {
Demo1MethodChongZai.FullType.GetEmployee(employeeSuccessfully);
}
function employeeSuccessfully(result) {
for (var i in result) {
alert(String.format("result[{0}]:
FirstName:{1}
LastName:{2}
Salary:{3}
FullName:{4}",i,result[i].FirstName,result[i].LastName,result[i].Salary,result[i].FullName));
}
}
</script>
</form>
</body>
Web服务文件：
/// <summary>
/// FullType 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class FullType : System.Web.Services.WebService
{
[WebMethod]
public Employee SalaryDouble(Employee employee)
{
employee.Salary *= 2;
return employee;
}
[WebMethod]
public List<int> reversalList(List<int> list)
{
list.Reverse();
return list;
}
[WebMethod]
public IDictionary<string, Employee> GetEmployee()
{
Dictionary<string, Employee> result = new Dictionary<string, Employee>();
Employee employee = new Employee();
employee.FirstName = "Dan";
employee.LastName = "Che";
employee.Salary = 2000;
result[employee.FullName] = employee;
Employee employee2 = new Employee();
employee2.FirstName = "Tan";
employee2.LastName = "Meng";
employee2.Salary = 2000;
result[employee2.FullName]=employee2;
return result;
}
}
注意：客户端访问WebService在性能方面比UpdatePanel好，UpdatePanel在性能上没有什么优势，它在postback给服务器的是整个页面，但回传的却是页面的一部分，强烈推荐使用客户端访问WebService方法。
客户端访问PageMethod
在服务器端：
1.只能在aspx.cs页面中定义
2.只能是public static 方法
3.要使用[WebMethod]标记
客户端：1.要将ScriptManager的EnablePageMethods属性改为true
2.要页面javascrpt函数中使用PangeMethods来调用后台方法
例子：
客户端：
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
</asp:ScriptManager>
<input type="button" id="btnGetTime" value="getTime" onclick="getTime()" />
</div>
<script type="text/javascript">
function getTime() {
PageMethods.getDateTime(huidiao);
}
function huidiao(result) {
alert(result);
}
</script>
</form>
后台：
[WebMethod]
public static DateTime getDateTime()
{
return DateTime.UtcNow;
}