Callouts in triggers not currently supported?
46737
HTTP Callout from Triggers
131766
Why should events in C# take (sender, EventArgs)?
7606
How do I unit test code that includes a callout?
55168
Lead Conversion Trigger Order of Execution
24037
Is Process builder a complete alternate for the triggers
110505
lead conversion trigger causing issue when multiple lead records are inserted
49334
Making trigger into a custom button
14437
How to trigger event in JavaScript?
114293
Disable the trigger in manage package
119655
How can I do a BEFORE UPDATED trigger with sql server?
155495
Attaching event handlers in Visual Basic .NET
16988
How do I use the Tooling API to create a new Apex Trigger?
154554
How to use trigger design pattern: ERROR Constructor not defined: [CaseTriggerHandler].()
141047
Change Data Capture and Async Triggers
148267
Updating a field on the lookup object using a trigger?
81827
How to check if a columns value was explicitly specified in a PL/SQL BEFORE UPDATE trigger?
151205
MYSQL Trigger not working