IDataStoreBase.UpdateStart Event

.NET Standard 2.x

Occurs when the Update method is called and before data changes are committed to the database.

Namespace: DWNet.Data

Assembly: DWNet.Data.dll

Syntax

  public event DwEventHandler<object, DwUpdateEventArgs> UpdateStart;

Remarks

In this event, you can set DwUpdateEventArgs.IsCancel to true to cancel the update.

Examples

The following code example demonstrates that the UpdateStart event is triggered when update starts in the DataStore.

using DWNet.Data;
using System;

namespace Appeon.ApiDoc.IDataStoreBaseExamples
{
    public class UpdateStartExample
    {
        private SchoolContext _context;

        public UpdateStartExample(SchoolContext dataContext)
        {
            // Sets the data context.
            _context = dataContext;
        }

        public void Example()
        {
            // Instantiates datastore with datawindow: d_department
            var department = new DataStore("d_department", _context);

            // Inserts data to the model
            decimal id = 1;
            var insertRow = department.InsertRow(0);

            department.SetItem(insertRow, "Departmentid", 10);
            department.SetItem(insertRow, "Name", "test depart");
            department.SetItem(insertRow, "Budget", id);
            department.SetItem(insertRow, "Startdate",
                DateTime.Parse("2018-12-12"));

            // Defines what to do when update is being executed.
            department.UpdateStart +=
                (object sender, DwUpdateEventArgs args) =>
                {
                    Console.WriteLine("Update starts...");
                };

            department.Update();

            /*This code produces the following output:
            
             Update starts...
            */
        }
    }
}

Example Refer To

Model Class: D_Department
DataWindow File: d_department

Applies to

.NET Standard

2.x