Call Jquery Code From Code Behind

Development
1

Hi,

I need to call a Jquery function from CodeBehind, I know that I should use Page.ClientScript.RegisterStartupScript() function but I don’t know how .

If you have an example of how to use it will be helpful.

Best Regards,
Sara.

2

Hi,

jQuery functions are usually run at client-side. You can simply embed your code in the Web References tab in the Form Designer.

Here are some articles on how you can include and execute client-side JavaScript/jQuery scripts.

3

Hi,

Thank you for the reply. I have already used Jquery to do some stuff in client side but I need to call a specific Jquery function from Code Behind .

Best Regards,

4

Hi,

The ClientScriptManager.RegisterStartupScript method allows you to inject at client JS when the page postback. Is that what you would like to achieve?

Here is a sample process of how it is being used in the form designer. You can open the Form / .NET tabs to view the code behind I have added.

https://advantys.box.com/s/m5t46uv0sfh27bjobxduwshms6f7ipdh

Form / .NET / Code Behind

	// Place here your ASP.NET procedures and global variables.
	// It will be declared within a <script runat="server"> block,
	// and placed before the opening <html>.
	// Do not include the <script runat="server"> tag.
	// Use the Control key + Spacebar to show the keywords list. 
	// ***********************************************************

	protected void Page_Load(object sender, EventArgs e)
	{
	    base.Page_Load(sender, e);
	    
	    // Define the name and type of the client scripts on the page.
        String csname1 = "PopupScript1";
        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))
        {
            StringBuilder cstext1 = new StringBuilder();
            cstext1.Append("<script type=text/javascript> alert('JS injected at Page_Load') </");
            cstext1.Append("script>");
    
            cs.RegisterStartupScript(cstype, csname1, cstext1.ToString());
        }
	}

    protected void REQUEST_BUTTON1_Click(object sender, EventArgs e) 
    {
        // Define the name and type of the client scripts on the page.
        String csname1 = "PopupScript2";
        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))
        {
            StringBuilder cstext1 = new StringBuilder();
            cstext1.Append("<script type=text/javascript> alert('JS injected on custom button click event') </");
            cstext1.Append("script>");
    
            cs.RegisterStartupScript(cstype, csname1, cstext1.ToString());
        }
    }
5

Here is another sample process that would call an existing JS function that was defined in the Web References tab in the Form designer on click of a button.

https://advantys.box.com/s/qllouhovadg7dlyecn32ccvfxi07fc8q

6

Hi,

Thank you for your helpful reply .

Best Regards.