I want to write a plugin for an entity called Students. I want to update a Student ID field automatically with auto numbers that increase by 1 each time, maybe with a prefix. So the Student ID field should = "SN" + AutoNumber.
I found a code that does this but with random numbering (in red below). I want it sequential autonumbers.
Can the system fetch the last created Student record, then add the "Student ID field + 1 to the new Student ID field in the new record? If so, can anyone suggest a code for this?
thanks in advance
***********************************
using System;
using Microsoft.Xrm.Sdk;
namespace Microsoft.Crm.Sdk.Samples
{
public class StudentIDPlugin: IPlugin
{
public void Execute(IServiceProvider serviceProvider)
{
// Obtain the execution context from the service provider.
Microsoft.Xrm.Sdk.IPluginExecutionContext context = (Microsoft.Xrm.Sdk.IPluginExecutionContext)
serviceProvider.GetService(typeof(Microsoft.Xrm.Sdk.IPluginExecutionContext));
// The InputParameters collection contains all the data passed in the message request.
if (context.InputParameters.Contains("Target") &&
context.InputParameters["Target"] is Entity)
{
// Obtain the target entity from the input parameters.
Entity entity = (Entity)context.InputParameters["Target"];
// Verify that the target entity represents a Student.
// If not, this plug-in was not registered correctly.
if (entity.LogicalName == "Students")
{
// An Student ID attribute should not already exist because
// it is system generated.
if (entity.Attributes.Contains("StudentID") == false)
{
// Create a new Student ID attribute, set its value, and add
// the attribute to the entity's attribute collection.
Random rndgen = new Random();
entity.Attributes.Add("account name", rndgen.Next().ToString());
}
else
{
// Throw an error, because Student ID must be system generated.
// Throwing an InvalidPluginExecutionException will cause the error message
// to be displayed in a dialog of the Web application.
throw new InvalidPluginExecutionException("The student ID can only be set by the system.");
}
}
}
}
}
}
*************************
*This post is locked for comments
I have the same question (0)
