'File' does not contain a definition for 'WriteAllText'

Good day!

Task: Upon changing the Type field in the account card, export all records from the section  to a CSV file on the user's computer.

You encountered an error message: 'File' does not contain a definition for 'WriteAllText'. However, you have included the using System.IO; directive.



Code:

 

  namespace Terrasoft.Configuration

{

    using Common;

    using System;

    using System.Linq;

    using Terrasoft.Core;

    using Terrasoft.Core.Entities;

    using Terrasoft.Core.Entities.Events;

    using Terrasoft.Core.Factories;

    using Newtonsoft.Json;

    using System.IO;

    #region Class: CHAccount_Custom_1EventListener

    [EntityEventListener(SchemaName = "Account")]

    public class CHAccount_Custom_1EventListener : BaseEntityEventListener

    {

        Entity _entity;

        UserConnection _userConnection;

        public UserConnection UserConnection => _userConnection ?? (_userConnection = _entity?.UserConnection);

        #region Methods: Public

        public override void OnSaved(object sender, EntityAfterEventArgs e)

        {

            base.OnSaved(sender, e);

            _entity = (Entity)sender;

            _userConnection = _entity.UserConnection;

            var typeId = _entity.GetTypedColumnValue("TypeId");

            // Check if the saving event occurred for the Account object.

            if (typeId == new Guid ("f2c0ce97-53e6-df11-971b-001d60e938c6"))

            {

                // Retrieve data of the accounts from the Account object.

                EntitySchemaQuery esq = new EntitySchemaQuery(_entity.Schema);

                esq.AddColumn("Name");

                esq.AddColumn("CreatedOn");

                EntityCollection collection = esq.GetEntityCollection(UserConnection);

                if (collection != null && collection.Count > 0)

                {

                    // Create a CSV file.

                    string csvContent = "Name,Date\n";

                    foreach (Entity entity in collection)

                    {

                        string name = entity.GetTypedColumnValue("Name");

                        DateTime date = entity.GetTypedColumnValue("CreatedOn");

                        csvContent += $"{name},{date.ToString("yyyy-MM-dd")}\n";

                    }

                    // Save the CSV file to the C drive of the user's computer.

                    string filePath = @"C:\Accounts.csv";

                    File.WriteAllText(filePath, csvContent);

                }

            }

        }

        #endregion

    }

    #endregion

}

 

Like 1

Like

2 comments
Best reply

Hi,

 

It happens because the system thinks that File is the Terrasoft.Configuration.File class by default. You need to specify complete class path (System.IO.File) in the code:

 

System.IO.File.WriteAllText(filePath, csvContent);

 

for the code to publish successfully.

Hi,

 

It happens because the system thinks that File is the Terrasoft.Configuration.File class by default. You need to specify complete class path (System.IO.File) in the code:

 

System.IO.File.WriteAllText(filePath, csvContent);

 

for the code to publish successfully.

Oleg Drobina,

Thank you very much, that helped."

Show all comments