C # WebService usage (simple weather query)

I was bored when I came back from work too early recently. Today I accidentally saw C # accessing WebService and wrote a simple weather query.

First add webreference:

Http://www.webxml.com.cn/WebServices/WeatherWebService.asmx

 

Obtain the weather service class:

 Using system; <br/> using system. collections. generic; <br/> using system. text; </P> <p> namespace weatherquery. SL <br/> {<br/> class weatherservice <br/> {<br/> # region variables <br/> private weatherwebservice. weatherwebservice serviceclient = new weatherquery. weatherwebservice. weatherwebservice (); <br/> # endregion </P> <p> # region methods <br/> // <summary> <br/> /// </Summary> <br/> // <returns> </returns> <br/> Public String [] getallservicearea () <br/>{< br/> try <br/>{< br/> return serviceclient. getsupportprovince (); <br/>}< br/> catch (exception ex) <br/>{< br/> throw ex; <br/>}</P> <p> // <summary> <br/> /// </Summary> <br/> /// <Param name = "areaname"> </param> <br/> /// <returns> </returns> <br/> Public String [] getareacitiesinarea (string areaname) <br/>{< br/> try <br/>{< br/> return serviceclient. getsupportcity (areaname); <br/>}< br/> catch (exception ex) <br/>{< br/> throw ex; <br/>}</P> <p> // <summary> <br/> /// </Summary> <br/> // <Param name = "cityname"> </param> <br/> // <returns> </returns> <br/> Public String [] getweatherbycityname (string cityname) <br/>{< br/> try <br/>{< br/> return serviceclient. getweatherbycityname (cityname); <br/>}< br/> catch (exception ex) <br/>{< br/> throw ex; <br/>}< br/> # endregion <br/>}< br/>

Bll servicehelper class:

Using system; <br/> using system. collections. generic; <br/> using system. text; </P> <p> using weatherquery. SL; </P> <p> namespace weatherquery. bll <br/> {<br/> class weatherservicehelper <br/> {<br/> # region variables <br/> private weatherservice = new weatherservice (); <br/> # endregion </P> <p> # region methods <br/> Public String [] getallsupportarea (out string errormessage) <br/>{< br/> try <Br/>{< br/> errormessage = string. empty; <br/> return weatherservice. getallservicearea (); <br/>}< br/> catch (exception ex) <br/>{< br/> errormessage = ex. message; <br/> return NULL; <br/>}</P> <p> Public String [] getallcitiesbyarea (string areaname, out string errormessage) <br/>{< br/> If (string. isnullorempty (areaname) <br/>{< br/> errormessage = "can not query null area! "; <Br/> return NULL; <br/>}< br/> else <br/> {<br/> try <br/> {<br/> errormessage = string. empty; <br/> return weatherservice. getareacitiesinarea (areaname); <br/>}< br/> catch (exception ex) <br/>{< br/> errormessage = ex. message; <br/> return NULL; <br/>}</P> <p> Public String [] getweathermessageofcity (string cityname, out string errormessage) <br/>{< br/> If (string. isnullo Rempty (cityname) <br/>{< br/> errormessage = "can not query null city! "; <Br/> return NULL; <br/>}< br/> else <br/> {<br/> try <br/> {<br/> errormessage = string. empty; <br/> // cityname = "Beijing (XXXX)" <br/> string cname = cityname. split (New char [] {'('}) [0]; <br/> return weatherservice. getweatherbycityname (cname); <br/>}< br/> catch (exception ex) <br/>{< br/> errormessage = ex. message; <br/> return NULL; <br/>}< br/> # endregion <br/>}< br/> 

UI Layer (winform 2.0)

Using system; <br/> using system. collections. generic; <br/> using system. componentmodel; <br/> using system. data; <br/> using system. drawing; <br/> using system. text; <br/> using system. windows. forms; </P> <p> namespace weatherquery <br/> {<br/> Public partial class mainfrom: Form <br/>{< br/> Public mainfrom () <br/>{< br/> initializecomponent (); <br/>}</P> <p> private void btnok_click (Object sender, eventargs E) <br/>{< br/> string errormessage; <br/> string [] weathermessage = weatherservicehelper. getweathermessageofcity (cboxcity. text, out errormessage); <br/> If (weathermessage = NULL) <br/>{< br/> MessageBox. show (errormessage); <br/>}< br/> else <br/>{< br/> lboxweathermessage. datasource = weathermessage; <br/>}</P> <p> private void btncanel_click (Object sender, eventargs E) <br/>{< br/> initarea (); <br/>}</P> <p> private void mainfrom_load (Object sender, eventargs E) <br/>{< br/> initarea (); <br/>}</P> <p> private void cboxarea_selectedindexchanged (Object sender, eventargs E) <br/>{< br/> string errormessage; <br/> string [] cities = weatherservicehelper. getallcitiesbyarea (cboxarea. text, out errormessage); <br/> If (cities = NULL) <br/>{< br/> MessageBox. show (errormessage); <br/>}< br/> else <br/>{< br/> cboxcity. datasource = cities; <br/>}</P> <p> private void initarea () <br/>{< br/> string errormessage; <br/> string [] arealist = weatherservicehelper. getallsupportarea (Out errormessage); <br/> If (arealist = NULL) <br/>{< br/> MessageBox. show (errormessage); <br/>}< br/> else <br/>{< br/> cboxarea. datasource = arealist; <br/> lboxweathermessage. datasource = NULL; <br/>}< br/>

Namespace weatherquery <br/>{< br/> partial class mainfrom <br/>{< br/> /// <summary> <br/> // required designer variable. <Br/> // </Summary> <br/> private system. componentmodel. icontainer components = NULL; </P> <p> // <summary> <br/> // clear all resources in use. <Br/> /// </Summary> <br/> /// <Param name = "disposing"> true if managed resources should be released; otherwise, false. </Param> <br/> protected override void dispose (bool disposing) <br/>{< br/> If (disposing & (components! = NULL) <br/>{< br/> components. dispose (); <br/>}< br/> base. dispose (disposing ); <br/>}</P> <p> # code generated by region windows Form Designer </P> <p> // <summary> <br/> // /the designer supports the required methods-do not <br/> // use the code editor to modify the content of this method. <Br/> // </Summary> <br/> private void initializecomponent () <br/>{< br/> This. cboxarea = new system. windows. forms. comboBox (); <br/> This. cboxcity = new system. windows. forms. comboBox (); <br/> This. btnok = new system. windows. forms. button (); <br/> This. btncanel = new system. windows. forms. button (); <br/> This. lboxweathermessage = new system. windows. forms. listBox (); <br/> This. suspendlayout (); <br/> // cboxarea <br/> // <br/> This. cboxarea. formattingenabled = true; <br/> This. cboxarea. location = new system. drawing. point (28, 70); <br/> This. cboxarea. name = "cboxarea"; <br/> This. cboxarea. size = new system. drawing. size (165, 20); <br/> This. cboxarea. tabindex = 0; <br/> This. cboxarea. selectedindexchanged + = new system. eventhandler (this. cboxarea_selectedindexchanged); <br/> // cboxcity <br/> // <br/> This. cboxcity. formattingenabled = true; <br/> This. cboxcity. location = new system. drawing. point (291, 70); <br/> This. cboxcity. name = "cboxcity"; <br/> This. cboxcity. size = new system. drawing. size (169, 20); <br/> This. cboxcity. tabindex = 1; <br/> // btnok <br/> // <br/> This. btnok. location = new system. drawing. time (118,459); <br/> This. btnok. name = "btnok"; <br/> This. btnok. size = new system. drawing. size (75, 23); <br/> This. btnok. tabindex = 3; <br/> This. btnok. TEXT = "query"; <br/> This. btnok. usevisualstylebackcolor = true; <br/> This. btnok. click + = new system. eventhandler (this. btnok_click); <br/> // btncanel <br/> // <br/> This. btncanel. location = new system. drawing. time (291,459); <br/> This. btncanel. name = "btncanel"; <br/> This. btncanel. size = new system. drawing. size (75, 23); <br/> This. btncanel. tabindex = 4; <br/> This. btncanel. TEXT = "reselect"; <br/> This. btncanel. usevisualstylebackcolor = true; <br/> This. btncanel. click + = new system. eventhandler (this. btncanel_click); <br/> // lboxweathermessage <br/> // <br/> This. lboxweathermessage. formattingenabled = true; <br/> This. lboxweathermessage. horizontalscrollbar = true; <br/> This. lboxweathermessage. itemheight = 12; <br/> This. lboxweathermessage. location = new system. drawing. time (28,130); <br/> This. lboxweathermessage. name = "lboxweathermessage"; <br/> This. lboxweathermessage. scrollalwaysvisible = true; <br/> This. lboxweathermessage. size = new system. drawing. size (544,316); <br/> This. lboxweathermessage. tabindex = 5; <br/> // mainfrom <br/> // <br/> This. autoscaledimensions = new system. drawing. sizef (6f, 12f); <br/> This. autoscalemode = system. windows. forms. autoscalemode. font; <br/> This. clientsize = new system. drawing. size (607,494); <br/> This. controls. add (this. lboxweathermessage); <br/> This. controls. add (this. btncanel); <br/> This. controls. add (this. btnok); <br/> This. controls. add (this. cboxcity); <br/> This. controls. add (this. cboxarea); <br/> This. name = "mainfrom"; <br/> This. TEXT = "simple weather query"; <br/> This. load + = new system. eventhandler (this. mainfrom_load); <br/> This. resumelayout (false); </P> <p >}</P> <p ># endregion </P> <p> private system. windows. forms. comboBox cboxarea; <br/> private system. windows. forms. comboBox cboxcity; <br/> private system. windows. forms. button btnok; <br/> private system. windows. forms. button btncanel; <br/> private system. windows. forms. listBox lboxweathermessage; <br/> private weatherquery. bll. weatherservicehelper = new weatherquery. bll. weatherservicehelper (); <br/>}</P> <p>

 

It's really boring.