Bulk save files attached to attachment

Let's right-click on the project and write it to the reference files

%SystemPath%\Common\eBAPI.dll
%SystemPath%\Common\eBAZipLibrary.dll

Let's add it to the usings above the form

using eBAPI;
using eBAPI.Connection;
using eBAPI.DocumentManagement;
using eBAZipLibrary;
using System.IO;

        void zipResponse(string category)
{
        using(eBAConnection con = CreateServerConnection())
        {
            Con. open();
            using (Stream zip = new MemoryStream())
            {
                ZipFile zipfile = new ZipFile();
                DMFile flWfd = con. FileSystem.GetWorkflowFile(id);
                foreach (DMFileRelation rel in flWfd.GetRelations())
                foreach(DMFileContent dmc in flWfd.GetAttachments(category))
                {                    
                        string name = dmc.ContentName;                
                        zipfile. AddEntry(name, flWfd.DownloadAttachmentContentBytes(category,name));
                }
                zipfile. Save(zip);
                eBAForm f = new eBAForm(id);
                WriteToResponse(zip, id.ToString() + " ID li Form Ekleri.zip");
            }  
        }
}

public void Button1_OnClick(Object sender, EventArgs e)
        {     
             
string category = "category1"; or TextBox1.Text // We get the category information in the Attachment object
                  zipResponse(category);

}