通过dojo.xhrPost访问web服务，请求返回的格式为Json ，通过dojo.fromJson 将字符串生成Json对象

 var intakenameselected=this.widgets.intakname.value;
                          var xhrArgs = {
                            url: "services/WebService.asmx/GetWaterIntake",handleAs: "json",headers: { "Content-Type": "application/json" },postData: '{"name":"' + intakenameselected + '"}',load: function (data) {
                               // alert(data.d);
                               var myData=dojo.fromJson(data.d);
                           dijit.byId("intaketxtName").setValue(myData[0].Name);
                           dijit.byId("intaketxtNum").setValue(myData[0].Serialnumber);
                           dijit.byId("intaketxtriver").setValue(myData[0].Riverin);
                           dijit.byId("intaketxtwater").setValue(myData[0].Takewater);
                        
                            },error: function (error) {




                                alert(error.toString());
                            }
                        };
                        
                        dojo.xhrPost(xhrArgs);