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 markedUsers = new List(); 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) { } } }