JS call background method JS call background Method

JS call background Method

Http://netcode.cnblogs.com/archive/2011/05/19/js-csharp.html
I. ajaxpro usage 1. add reference in the project, browse to find the ajaxpro.2.dll file 2. in the web. system. write the following code in the Web </configuration> <system. web> 
2. Direct call: In javascript: <% = background method %> function says () {alert ("<% = say () %>");} function del () {alert ("<% = deletebyid (8) %>"); // deletebyid (8) Background method name} 3. Callback using icallbackeventhandler // system must be declared. web. UI. icallbackeventhandler interface public partial class _ default: system. web. UI. page, system. web. UI. icallbackeventhandler {// defines the private string result returned by a callback; // defines two variables to receive the private string num1, private string num2, and protected void page_load (Object sender, eventargs e) {}/// <summary> // This method is the method for callback execution. The callback content is processed according to parameters in this method, this method does not return a value /// </Summary> /// <Param name = "eventargument"> this parameter is passed from the client </param> Public void raisecallbackevent (string eventargument) {// eventargumeng is the parameter passed by JavaScript from the client. In this example, the three parameters are separated by "/" and each parameter is retrieved and saved to the array string [] pagparams = eventargument. split ('/'); num1 = pagparams [1]; num2 = pagparams [2]; // based on the first parameter (selected operator ), call different execution functions switch (pagparams [0]) {Case "0": Result = add (); break; Case "1": Result = sub (); break; case "2": Result = multi (); break; Case "3": Result = Division (); break ;}} /// <summary> /// this method returns the callback result to the client // </Summary> /// <returns> </returns> Public String getcallbackresult () {return result;} // The following four functions use the raisecallbackevent method. The called callback function private string add () {double addresult = double. parse (num1) + double. parse (num2); Return addresult. tostring ();} private string sub () {double addresult = double. parse (num1)-double. parse (num2); Return addresult. tostring ();} private string multi () {double addresult = double. parse (num1) * double. parse (num2); Return addresult. tostring ();} private string Division () {double addresult = double. parse (num1)/double. parse (num2); Return addresult. tostring ();}}
In my implementation, there is a textbox and a common button at the front end. click the button to insert the value in the textbox into the database.
<Asp: textbox id = "textbox1" runat = "server"> </ASP: textbox>
<Input id = "button1" type = "button" value = "click my" onclick = "test ();"/>
Function Test ()
{
VaR names = Document. getelementbyid ("textbox1"). value;
VaR result = _ default. insert (names). value;
Alert (result );
}
Background # Region
[Ajaxpro. ajaxmethod]

Public static string insert (string name)
{

String flag = "submission failed ";
Sqlconnection conn = dbopen. dbaseconfigconnect ();
Sqlcommand command = new sqlcommand ();
Command. Connection = conn;
String STR = "Update wblxdjb set WXR = '" + name + "'where bxbh = 'dia201 '";
Command. commandtext = STR;
If (command. executenonquery () = 1)
Flag = "submitted ";
Return flag;

}
# Endregion
Protected void page_load (Object sender, eventargs E)
{
Ajaxpro. Utility. registertypeforajax (typeof (_ default ));
}
Remember to reference ajaxpro.2.dll
Web. config
    <add verb="POST,GET" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2"/>
        
Http://netcode.cnblogs.com/archive/2011/05/19/js-csharp.html
I. ajaxpro usage 1. add reference in the project, browse to find the ajaxpro.2.dll file 2. in the web. system. write the following code in the Web </configuration> <system. web> 
2. Direct call: In javascript: <% = background method %> function says () {alert ("<% = say () %>");} function del () {alert ("<% = deletebyid (8) %>"); // deletebyid (8) Background method name} 3. Callback using icallbackeventhandler // system must be declared. web. UI. icallbackeventhandler interface public partial class _ default: system. web. UI. page, system. web. UI. icallbackeventhandler {// defines the private string result returned by a callback; // defines two variables to receive the private string num1, private string num2, and protected void page_load (Object sender, eventargs e) {}/// <summary> // This method is the method for callback execution. The callback content is processed according to parameters in this method, this method does not return a value /// </Summary> /// <Param name = "eventargument"> this parameter is passed from the client </param> Public void raisecallbackevent (string eventargument) {// eventargumeng is the parameter passed by JavaScript from the client. In this example, the three parameters are separated by "/" and each parameter is retrieved and saved to the array string [] pagparams = eventargument. split ('/'); num1 = pagparams [1]; num2 = pagparams [2]; // based on the first parameter (selected operator ), call different execution functions switch (pagparams [0]) {Case "0": Result = add (); break; Case "1": Result = sub (); break; case "2": Result = multi (); break; Case "3": Result = Division (); break ;}} /// <summary> /// this method returns the callback result to the client // </Summary> /// <returns> </returns> Public String getcallbackresult () {return result;} // The following four functions use the raisecallbackevent method. The called callback function private string add () {double addresult = double. parse (num1) + double. parse (num2); Return addresult. tostring ();} private string sub () {double addresult = double. parse (num1)-double. parse (num2); Return addresult. tostring ();} private string multi () {double addresult = double. parse (num1) * double. parse (num2); Return addresult. tostring ();} private string Division () {double addresult = double. parse (num1)/double. parse (num2); Return addresult. tostring ();}}
In my implementation, there is a textbox and a common button at the front end. click the button to insert the value in the textbox into the database.
<Asp: textbox id = "textbox1" runat = "server"> </ASP: textbox>
<Input id = "button1" type = "button" value = "click my" onclick = "test ();"/>
Function Test ()
{
VaR names = Document. getelementbyid ("textbox1"). value;
VaR result = _ default. insert (names). value;
Alert (result );
}
Background # Region
[Ajaxpro. ajaxmethod]

Public static string insert (string name)
{

String flag = "submission failed ";
Sqlconnection conn = dbopen. dbaseconfigconnect ();
Sqlcommand command = new sqlcommand ();
Command. Connection = conn;
String STR = "Update wblxdjb set WXR = '" + name + "'where bxbh = 'dia201 '";
Command. commandtext = STR;
If (command. executenonquery () = 1)
Flag = "submitted ";
Return flag;

}
# Endregion
Protected void page_load (Object sender, eventargs E)
{
Ajaxpro. Utility. registertypeforajax (typeof (_ default ));
}
Remember to reference ajaxpro.2.dll
Web. config
    <add verb="POST,GET" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2"/>