I have a custom entity 1:m to opportunity .. The grid on the opportunity tab shows the data from the custom entity and has + to add new data..

When the insert page loads, I have some code that gathers all the closed products for the opportunity and lists them in a combobox.. I have some code on the OnChange event of the combobox that changes a label providing the user with directions based upon the selection in the combobox..

The issue is that the OnChange event on server side posts a row to the database, and then after adding more data to the form and saving posts a second row ...

So I am thinking if I can move the onChange event to client side with some javascript then I can change the label on the form w/o posting back..

Does anyone have an example of how I can do this..?

I have so far tried adding to the load actions the following:

this.cmbProduct.Attributes.Add("onchange",

"Javascript: var switch(this.cmbProduct.SelectedValue){case (Air Export): case(Air Import): L.ForeColor = System.Drawing.Color.Red;L.Font.Size = System.Web.UI.WebControls.FontUnit.Point(10);");

However, this doesn't seem to fire.

I thought about adding an external .js file but not quite sure how to register it correctly:

ScriptManager.RegisterStartupScript(Page, this.GetType(), "CallJS", "JSFunctionName();", true);

    the example above I don't know how to change to call the external file..

Does anyone have an example of something like this so I can figure this out..?

Well still trying to resolve this have tried the following and still no luck in getting this to work correctly.. Any ideas or direction are welcome..

OnLoad action of Quickform I have added this:

ScriptManager.RegisterClientScriptInclude(this.cmbProduct, "OnExit", ChangeLabel(), HttpContext.Current.Request.ApplicationPath + "/SupportFiles/jscipt/UTI/UTI_POE.js");

my javascript is a function called ChangeLabel(),

I am getting an error when the smartpart loads telling me that the ChangeLabel doesn't exist. What is the syntax to correctly register my Javascrip function to be called from the file ?

Hi RJ,

I don't think you would include a function name in this method call...I believe it should look something like this:

ScriptManager.RegisterClientScriptInclude(this.Page, this.GetType(), "OnExit", HttpContext.Current.Request.ApplicationPath + "/SupportFiles/jscipt/UTI/UTI_POE.js");

This part just creates the link to the JS file. You'll still need the event handler on the control, just like you had in your first post. You might try removing the "Javascript:" at the beginning of the event handler if it doesn't seem to be firing.

I hope this points in the right direction. This stuff is fussy!