You can add a button
- In a custom ASP page
- In a the code of a .NET assembly
- In a an existing system screen
Buttons in an ASP Page
If this is in an ASP page then the code for a simple button to call an external ASP page looks like
var strCallASPButton = CRM.Button("ASP","save.gif", CRM.Url("http://myserver/myPage.asp"));
A full discussion of buttons in ASP pages can be found in the article "Adding Buttons to an ASP Page".
Buttons in a .NET assembly
If this is in the code for a .NET assembly then the code for a simple button to call an external ASP/ASPX page looks like
AddUrlButton("CaptionCode", "Image.gif", Url("http://myserver/myPage.asp"));
Members of the Developer Program have access to the .NET SDK and documentation which have extensive examples and snippets that show the creation of Custom Buttons.
Buttons in a System Page
If you just want to add a button to a system screen using the Button Groups feature, then you need to use the 'customurl' action and the URL name will be a PsuedoURL like this:
For another example of a PseudoURL see the article "Adding a Print Button to a System Screen".
The code above will pop up the external site in a new browser window and pass to it the current context information. This trick uses the GetKeys() system function which is discussed in the article "Grabbing Key Values client side".
Note: The field 'URL name' only has a limited amount of space so you may have to add the code as a function in the screens custom content box and then call the function from the pseudo URL
You can see an example of this combination of PsuedoURL and function defined in a custom content box in the article "Adding a Report Button to an Existing System Screen, e.g. OpportunitiesList".