merged

Form1.cs

@@ -1,62 +1,104 @@
-using MySql.Data.MySqlClient;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows.Forms;
-
-
-namespace it_projekt
-{
-    public partial class Form1 : Form
-    {
-        public Form1()
-        {
-            InitializeComponent();
-        }
-
-
-        private void searchBtn_Click(object sender, EventArgs e)
-        {
-            foreach(DataGridViewRow row in dataGrid.Rows)
-            {
-                List<int> markedUsers = new List<int>();
-                if (row.Cells[4].Value != null)
-                {
-                    if (row.Cells[4].Value.ToString() == "True")
-                    {
-                        MessageBox.Show("geht");
-                    }
-                }
-                
-                
-            }
-            
-        }
-
-        private void loginBtn_Click(object sender, EventArgs e)
-        {
-            LoadUsersFromTable(userTxt.Text,passTxt.Text);
-        }
-
-
-
-        public void LoadUsersFromTable(string user, string password)
-        {
-            Database db = new Database(user, password);
-            foreach (Person person in db.Persons)
-            {
-                this.dataGrid.Rows.Add(person.Id, person.Firstname, person.Lastname, person.CreationDate, false);
-            }
-        }
-
-        private void dataGrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
-        {
-            
-        }
-    }
-}
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Text.Json;
+using System.Windows.Forms;
+
+
+namespace it_projekt
+{
+    public partial class Form1 : Form
+    {
+
+        private Database db = null;
+        public Form1()
+        {
+            InitializeComponent();
+        }
+
+
+        private void exportBtn_Click(object sender, EventArgs e)
+        {
+            exportJSON();
+        }
+
+        private void loginBtn_Click(object sender, EventArgs e)
+        {
+            LoadUsersFromTable(this.userTxt.Text, this.passTxt.Text);
+        }
+
+
+
+        public void LoadUsersFromTable(string user, string password)
+        {
+            if (db == null)
+            {
+                db = new Database(user, password);
+            }
+            foreach (Person person in db.Persons)
+            {
+                this.dataGrid.Rows.Add(person.Id, person.Firstname, person.Lastname, person.CreationDate, false);
+            }
+        }
+
+        private void dataGrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
+        {
+            
+        }
+
+        private void exportJSON()
+        {
+            Stream myStream;
+            SaveFileDialog saveFileDialog1 = new SaveFileDialog();
+
+            saveFileDialog1.Filter = "All files (*.*)|*.*|json files (*.json)|*.json";
+            saveFileDialog1.FilterIndex = 2;
+            saveFileDialog1.RestoreDirectory = true;
+            saveFileDialog1.FileName = "benutzer.json";
+
+            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
+            {
+                if ((myStream = saveFileDialog1.OpenFile()) != null)
+                {
+                    List<Person> markedUsers = new List<Person>();
+                    foreach (DataGridViewRow row in dataGrid.Rows)
+                    {
+                        if (row.Cells[4].Value != null)
+                        {
+                            if (row.Cells[4].Value.ToString() == "True")
+                            {
+                                markedUsers.Add(db.Persons.Find(person => person.Id == row.Cells[0].Value.ToString()));
+                            }
+                        }
+                    }
+                    string json = JsonSerializer.Serialize(markedUsers);
+                    StreamWriter sw = new StreamWriter(myStream);
+                    sw.Write(json);
+                    sw.Flush();
+                    sw.Close();
+                    myStream.Close();
+                }
+            }
+        }
+
+        private void Form1_Load(object sender, EventArgs e)
+        {
+
+        }
+
+        private void jsonRBtn_CheckedChanged(object sender, EventArgs e)
+        {
+            xmlRBtn.Checked = false;
+            if (!jsonRBtn.Checked)
+                jsonRBtn.Checked = true;
+        }
+
+        private void xmlRBtn_CheckedChanged(object sender, EventArgs e)
+        {
+            xmlRBtn.Checked = false;
+            if (!xmlRBtn.Checked)
+                xmlRBtn.Checked = true;
+        }
+    }
+}