I am inside of...
public class bgchange : IMapServerDropDownBoxAction
{
void IServerAction.ServerAction(ToolbarItemInfo info)
{
Some code...
and after "some code" I want to trigger
[WebMethod]
public static void DoSome()
{
}
Which triggers some javascript. Is this possible?
Ok, switch methods here. I was able to call dosome(); which fired but did not trigger the javascript. I have tried to use the registerstartupscript method but don't fully understand how to implement it. Here's what I tried:
public class bgchange : IMapServerDropDownBoxAction
{
void IServerAction.ServerAction(ToolbarItemInfo info)
{
...my C# code to perform on dropdown selection...
//now I want to trigger some javascript...
// Define the name and type of the client scripts on the page.
String csname1 = "PopupScript";
Type cstype = this.GetType();
// Get a ClientScriptManager reference from the Page class.
ClientScriptManager cs = Page.ClientScript;
// Check to see if the startup script is already registered.
if (!cs.IsStartupScriptRegistered(cstype, csname1))
{
String cstext1 = "alert('Hello World');";
cs.RegisterStartupScript(cstype, csname1, cstext1, true);
}
}
}
I got the registerstartupscript code from an msdn example. Clearly I am not implementing it correctly. Currently vs says "An object reference is required for the non-static field, method, or property 'System.Web.UI.Page.ClientScript.get' refering to the piece of code "Page.Clientscript;" Thanks.
I'm not sure I fully understand the sequence of what you are trying to do, what's client-side and what's not....
However, you could add a Start-up javascript method to the page which would then call the WebMethod. When calling a WebMethod via javascript, you can add a call-back function, which would then be called when the WebMethod returns.
If you add a ScriptManager tag on your page, you can call WebMethods defined in the page via Javascript.
<asp:ScriptManager ID="scriptManager1"
runat="server" EnablePageMethods="true" />
From the Page_Load function you can add a call to your WebMethod..
Page.ClientScript.RegisterStartupScript(
this.GetType(),
"callDoSome",
"PageMethods.DoSome(Callback_Function, null)",
true);
Callback_Function represents a javascript function that will be executed after the WebMethod is called...
<script language="javascript" type="text/javascript">
function Callback_Function(result, context) {
alert('WebMethod was called');
}
</script>
EDIT:
Found this link for Web ADF controls. Is this what you are using??
From that page, it looks like something like this will do a javascript callback.
public void ServerAction(ToolbarItemInfo info) {
string jsfunction = "alert('Hello');";
Map mapctrl = (Map)info.BuddyControls[0];
CallbackResult cr = new CallbackResult(null, null, "javascript", jsfunction);
mapctrl.CallbackResults.Add(cr);
}
If the above is how you are calling RegisterStartupScript, it won't work because you don't have a reference to the "Page" object.
bgchange in your example extends Object (assuming IMapServerDropDownBoxAction is an interface), which means that there is no Page instance for you to reference.
This you did the exact same thing from a Asp.Net Page or UserControl, it would work, because Page would be a valid reference.
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(
this.GetType(),
"helloworldpopup",
"alert('hello world');",
true);
}
}
You cannot call methods within a browser directly from the server. You can, however, add javascript functions to the response that will execute methods within the browser.
Within the ServerAction method, do the following
string script = "<script language='javascript'>\n";
script += "javascriptFunctionHere();\n";
script += "</script>";
Page.RegisterStartupScript("ForceClientToCallServerMethod", script);
More info here
hmmm... the question changed dramatically since my original answer.
Now I think the answer is no. But I might be wrong.
Related
I have public variables:
public static List<CompanyModel1> companies1 = new List<CompanyModel1>();
public List<URL> urls = new List<URL>();
I add more values to this variable during a function call
public void DataBind_Results()
{
..companies1.AddRange(listToAdd.OrderByDescending(c => c.compnMastery1));
}
urls.Add(new URL
{
Link = listToAdd.First().compnId1.ToString(),
Title = arrProcess[ar]
});
But my code always run twice (I see that when I use debug), I think the reason is it always have page reload.
Then my variable will be duplicate its values, and when I the data display, I see it is duplicated. How to avoid it ?
I'm going to assume you're using asp.net or something. Wrap the "add" function in an
if(!Page.IsPostBack) {
//Your add code
}
Ideally, find out why your page is loading twice then fix that.
Then add code to check whether the lists are populated at the start of each data bind before they are re-populated.
You want the variable to populate OnLoad so do something like this:
Declare your variables:
public static List<CompanyModel1> companies1;
public List<URL> urls;
The populate them when the page loads. But not if you're doing a postback.
protected override void OnLoad(EventArgs e)
{
if(!IsPostBack)
{
companies1 = new List<CompanyModel1>();
urls = new List<URL>();
}
}
Your code is running twice that means, once when you call that function and again when the page is posted back.
Put your code in
if(!IsPostBack)
{
here.....
}
I have an Enable.js file that has an Enable() function. I want to call this Enable function from the C# codebehind. My .js file and c# file are in same application.
I have tried this, but it doesn't help me.
Page.ClientScript.RegisterStartupScript(this.GetType(), "click", "Enable(true)", true);
Try this:
ScriptManager.RegisterClientScriptInclude(
this,
typeof(Page),
"Enable-js",
ResolveClientUrl("~/scripts/Enable.js"));
ScriptManager.RegisterStartupScript(
this, GetType(), Guid.NewGuid().ToString(),
"Enable(True);", true);
http://msdn.microsoft.com/pt-br/library/bb337005.aspx
I could see "click" in your code. Hence, I assume that you need to click some button to call Enable(true) function inside Enable.js file
Follow these below steps:
Reference your Enable.js file inside <head> section like below.
<script src="Scripts/Enable.js" type="text/javascript"></script>
Enable.js file is given below:
function Enable(var){
alert(val)
}
To call on Enable() function on Button1's click event:
protected void Page_Load(object sender, EventArgs e){
Button1.Attributes.Add("OnClick", "return Enable('true');");
}
Let me know if you need some more help.
I wrote a nice little function for calling jquery or just general JS in C# based on some VB I saw a while ago.
public bool runJQueryCode(string message)
{
ScriptManager requestSM = ScriptManager.GetCurrent(Page);
if (requestSM != null && requestSM.IsInAsyncPostBack)
{
ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), Guid.NewGuid().ToString(), getjQueryCode(message), true);
}
else
{
Page.ClientScript.RegisterClientScriptBlock(typeof(Page), Guid.NewGuid().ToString(), getjQueryCode(message), true);
}
return true;
}
private string getjQueryCode(string jsCodetoRun)
{
string x = "";
x += "$(document).ready(function() {";
x += jsCodetoRun;
x += " });";
return x;
}
So you can just call runJqueryCode("alert('hey')");
You are making a mistake here:
Page.ClientScript.RegisterStartupScript(this.GetType(), "click", "Enable(true)", true);
The Enable(true) is not possible its literal string true that you're trying to pass as parameter.
You should try this way, so it may help.Its only a sample for understanding
string func = "showSuccessMessage('"+name+"');";
//Pass string as funcion in c#
This Link will explain calling javascript function with parameter from C# Code behind.
this.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "xx",
"<script>test("+x+","+y+");</script>");
I am using the below client script in aspx code behind to call a javascript function. But the below client script in public static method so i got the error in registerstartupscript first argument.My older post is here Call non-static function from static function
If any one have a possible solutions please post..
Page.ClientScript.RegisterStartupScript(typeof(Page), "SymbolError", "from_bill_tab();");
Try this:
ClientScript.RegisterStartupScript(typeof(Page), "SymbolError",
"<script type='text/javascript'>alert('Error !!!');</script>");
I know this is an old question.I am answering this to help new users who come across this question.
To use clientscript inside a static method pass the Page object as a parameter to your static method
protected void Page_Load(object sender, EventArgs e)
{
LoadJavascript(Page);
}
public static void LoadJavascript( Page page)
{
page.ClientScript.RegisterStartupScript(page.GetType(), "alert", "<script>alert('Hai');</script>");
}
i am trying to implement a button click event and trying to call it in my java script function without actually clicking the button.
protected void btn_hid_Click(object sender, EventArgs e) {
string fbid = tb_id.Text;
query = "select userid from users where fbid='" + fbid + "'";
ds = db.SelectDs(query);
}
now i want to call this function in javascript function as soon as page load occurs and java script is called.
function func() {
alert("hiden");
$(document).ready(function () {
control or simple html control
$("[id*='btn_hid']").click();
});
alert("hiden end");
}
but this is not happening.Could you please tell how to do it?
You can try with this code
btn_hid.Attributes.Add("onclick","return YourFunction()");
Nota : if your wish also register dynamically your script you can use
var script = "";
Page.RegisterStartupScript("YourkeyOfScript",script);
Nota : You can also use OnClientClick in your interface
Your code is right. but It may be some problem. you can try with the alternate code.
using the following line of code.
__doPostBack('<%= btn_hid.ClientID %>', '')
I have active-x class written in c# which is multi-threaded. I need to call javascript from my activeX. I tried it by Microsoft.mshtml .
/*JS
function do_Print() {
control.setPage(this);
control.scriptPrint();
}
function report_back(report){
alert("Report:"+report);
}
C#
public void setPage(mshtml.HTMLWindow2Class JSFile) {
window = JSFile;
}
public void scriptPrint(){
window.execScript("report_back('Printing complete!')", "JScript");
}
*/
But its throwing exception
"unable to cast COM object of type
'mshtml.HTMLWindow2Class' to interface
type 'mshtml.DispHTMLWindow2'"
Is there another way round. I am able to call active-x function from java script but vice versa still got above exception. Any idea for multi-threaded c# active-x calling javascript function ???
you can access html like this
private void MyControl_Load(object sender, EventArgs e)
{
if (this.Site != null)
{
htmldoc = (HtmlDocument)this.Site.GetService(typeof(HtmlDocument));
}
}
then on any button click on our C# control invoke method to click html button
HtmlElement setCLIButton = htmldoc.GetElementById("searchButton");
setCLIButton.InvokeMember("onClick");
by this way you can call your javacsript function hope it will help someone.