Generate Text File Upon Button Action and Save to local Drive using Acumatica - acumatica

Question

I am trying to generate a text file on an Action Button, with contents of a dataview created in a Graph Class and Save the file in my Local Drive. But i am unable to do it.
Please help me with the file generation...Thanks
I AM USING Acumatica Version 2019R2 (v 19.203.0042)
MY CODE GOES HERE...
public PXSelect<MayBankGIRO> Document; //this is my dataview
public PXAction<MayBankGiroFilter> createTextFile;
[PXUIField(DisplayName = "Create Text File")]
[PXButton()]
public virtual IEnumerable CreateTextFile(PXAdapter adapter)
{
string filepath = "C:\\Subhashish Dawn";
System.IO.StreamWriter sw = new System.IO.StreamWriter(filepath);
MayBankGIRO giroObject = this.Document.Current;
List<object> myListObject = new List<object> { };
FixedLengthFile flatFile = new FixedLengthFile();
foreach (MayBankGIRO dacRecord in this.Document.Select())
{
if (giroObject.ReordType == "00")
{
myListObject.Add(dacRecord.ReordType + "|" + dacRecord.CorporateID + "|" + dacRecord.ClientBatchID + "|");
}
else
{
myListObject.Add(dacRecord.ReordType + "|" + dacRecord.CorporateID + "|" + dacRecord.ClientBatchID + "|" + dacRecord.Country + "|");
string data = dacRecord.ReordType;
}
this.Document.Update(dacRecord);
}
flatFile.WriteToFile(myListObject, sw);
sw.Flush();
sw.FlushAsync();
string path = "DAWN" + ".txt";
PX.SM.FileInfo file = new PX.SM.FileInfo(Guid.NewGuid(), path, null, System.Text.Encoding.UTF8.GetBytes(**path**)); // what shall i substitite in place of **path**
throw new PXRedirectToFileException(file, true);
}
``````````````````````````````````````````````````````
Can anyone please specify what changes in have to make in the above code.

Answer 1

I utilize UploadFileMaintenance to do this. I'm not sure if this will meet your needs, but here is the core of my code that works for me.
byte[] labelBytes = Encoding.ASCII.GetBytes(myLabelData);
if(labelBytes.Length > 0)
{
string filename = "label-" + Guid.NewGuid().ToString() + ".txt";
PX.SM.FileInfo labelFileInfo = new FileInfo(filename, null, labelBytes);
UploadFileMaintenance upload = PXGraph.CreateInstance<UploadFileMaintenance>();
if (upload.SaveFile(labelFileInfo))
{
string targetUrl = PXRedirectToFileException.BuildUrl(labelFileInfo.UID);
throw new PXRedirectToUrlException(targetUrl, "Print Labels");
}
}

Answer 2

Assuming your Document object is the view you need and its Select() method returns all the data records you need inside your file, this should work:
// We need at least these, listing them for reference
using PX.Data;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
// This is your dataview
public PXSelect<MayBankGIRO> Document;
// Your action delegate
public PXAction<MayBankGiroFilter> createTextFile;
[PXUIField(DisplayName = "Create Text File")]
[PXButton()]
public virtual IEnumerable CreateTextFile(PXAdapter adapter)
{
// You can use this method to print debug information for your customizations
// Just remove when you are done testing
PXTrace.WriteInformation("Generating records");
// We will build the content as a string list first
List<string> myList = new List<string> { };
// If the value of 'ReordType' can change for each record, you don't need this
MayBankGIRO giroObject = this.Document.Current;
foreach (MayBankGIRO dacRecord in this.Document.Select())
{
// Does 'ReordType' change for each record?
// if it does you may need to use 'dacRecord.ReordType' in this if instead
if (giroObject.ReordType == "00")
{
// This only works if all these members are strings or can be cast to strings
myList.Add(dacRecord.ReordType + "|" + dacRecord.CorporateID + "|" + dacRecord.ClientBatchID + "|");
}
else
{
// This only works if all these members are strings or can be cast to strings
myList.Add(dacRecord.ReordType + "|" + dacRecord.CorporateID + "|" + dacRecord.ClientBatchID + "|" + dacRecord.Country + "|");
}
}
PXTrace.WriteInformation("Generating file");
// Set the name
string filename = "DAWN" + ".txt";
// Use our download method
Download(myList, filename);
}
// We can define a static method to be able to reuse this later for other DACs
public static void Download(List<string> lines, string name)
{
var bytes = default(byte[]);
// Write all lines to stream
using (MemoryStream stream = new MemoryStream())
{
StreamWriter sw = new StreamWriter(stream);
foreach (string line in lines)
{
sw.WriteLine(line);
}
sw.Close();
stream.Position = 0;
bytes = stream.ToArray();
};
// Save content to file object
PX.SM.FileInfo textDoc = new PX.SM.FileInfo(name, null, bytes);
if (textDoc != null)
{
// Trigger file download
throw new PXRedirectToFileException(textDoc, true);
} else {
//TODO: You could raise an exception here also to notify the user
PXTrace.WriteInformation("Could not generate file");
}
}

Answer 3

Hi Markoan your code helped me to create the textfile but the content of the textfile is getting repeated with the first record of the data-view. My reord type have only three values "00" for the first record "01" for the 2nd to n-1 record and "99" for the nth record.
Though I have made few changes to your code
// We need at least these, listing them for reference
using PX.Data;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
// This is your dataview
public PXSelect<MayBankGIRO> Document;
// Your action delegate
public PXAction<MayBankGiroFilter> createTextFile;
[PXUIField(DisplayName = "Create Text File")]
[PXButton()]
public virtual IEnumerable CreateTextFile(PXAdapter adapter)
{
// You can use this method to print debug information for your customizations
// Just remove when you are done testing
PXTrace.WriteInformation("Generating records");
// We will build the content as a string list first
List<string> myList = new List<string> { };
// If the value of 'ReordType' can change for each record, you don't need this
MayBankGIRO giroObject = this.Document.Current;
foreach (MayBankGIRO dacRecord in this.Document.Select())
{
// Does 'ReordType' change for each record?
// if it does you may need to use 'dacRecord.ReordType' in this if instead
myList.Add(dacRecord.ReordType + "|" + dacRecord.CustomerReferenceNumber + "|" + dacRecord.ClientBatchID + "|" + dacRecord.Country + "|");
}
PXTrace.WriteInformation("Generating file");
// Set the name
string filename = "DAWN" + ".txt";
// Use our download method
Download(myList, filename);
}
// We can define a static method to be able to reuse this later for other DACs
public static void Download(List<string> lines, string name)
{
var bytes = default(byte[]);
// Write all lines to stream
using (MemoryStream stream = new MemoryStream())
{
StreamWriter sw = new StreamWriter(stream);
foreach (string line in lines)
{
sw.WriteLine(line);
}
// sw.Close(); this was showing some error
stream.Position = 0; // "Cannot reach a closed stream" hence i added it in the next line
bytes = stream.ToArray();
sw.Close();
};
// Save content to file object
PX.SM.FileInfo textDoc = new PX.SM.FileInfo(name, null, bytes);
if (textDoc != null)
{
// Trigger file download
throw new PXRedirectToFileException(textDoc, true);
} else {
//TODO: You could raise an exception here also to notify the user
PXTrace.WriteInformation("Could not generate file");
}
}