问题
When I register an OnChange function to a field, it gets fired if the field is updated on a plugin on the server side (On Dynamics Crm 2015)
Can this behavior be prevented (In a supported way)?
Example code:
1. Client side:
Xrm.Page.getAttribute("org_myfield").addOnChange(function () { alert("org_myfield was changed") });
2. Server side:
internal void OnPreUpdateRequest(org_myentity target, org_myentity preImage)
{
target.org_myfield = "some value";
}
3. Result (after saving the record and plugin finished its run):
"org_myfield was changed"
Required result: The alert should not be fired.
回答1:
I believe this is what you are trying to get:
1. When user makes change on this field, call the JavaScript on change function;
2. When the record is saved, a plugin might change the value of the field as well;
3. If the field value is altered by the plugin, skip the JavaScript function.
If this is correct, I would try this way:
Remove the onChange event from the field, instead check the field status in onSave event of the form.
Use Xrm.Page.getAttribute("org_myfield").getIsDirty() to determine whether the user makes any change on the field. It only checks the changes on client side so it won't be affected by plugin.
来源：https://stackoverflow.com/questions/47079719/prevent-firing-of-onchange-function-after-field-is-updated-on-server-side