[英]C# - How to use ListView and SQLite database
I'm trying to add some data from a SQLite database, inside a ListView.我正在尝试从 SQLite 数据库的 ListView 中添加一些数据。 I'm having some difficulties as I want to insert all the data of the column and not a single record.
我遇到了一些困难,因为我想插入列的所有数据而不是单个记录。
TEST CODE:测试代码:
Form1.cs {Load} Form1.cs {加载}
private void home_form_Load(object sender, EventArgs e)
{
listView1.Refresh();
listView1.View = View.Details;
listView1.Columns.Add("ID");
listView1.Columns.Add("Grado");
listView1.Columns.Add("Cognome");
listView1.Columns.Add("Nome");
listView1.Columns.Add("Status");
}
Form1.cs {menu_button_gestionepax} Form1.cs {menu_button_gestionepax}
private void menu_button_gestionepax_Click(object sender, EventArgs e)
{
menu_button_dashboard.BackColor = System.Drawing.Color.DeepSkyBlue;
panel_dashboard.Visible = false;
gestionepersonale_panel.Visible = true;
menu_button_gestionepax.BackColor = System.Drawing.Color.Blue;
listView1.Refresh();
ListViewItem lst = new ListViewItem();
lst.SubItems.Add(LoadUsers.ManagerFind());
lst.SubItems.Add(LoadUsers.ManagerFind());
lst.SubItems.Add(LoadUsers.ManagerFind());
lst.SubItems.Add(LoadUsers.ManagerFind());
lst.SubItems.Add(LoadUsers.ManagerFind());
listView1.Items.Add(lst);
/*
string[] row = { LoadUsers.ManagerFindid(), LoadUsers.ManagerFindid() };
var listViewItem = new ListViewItem(row);
infobox_listview.Items.Add(listViewItem);
*/
}
LoadUsers.cs加载用户文件
public dynamic string ManagerFind()
{
using (IDbConnection cnn = new SQLiteConnection(LoadConnectionString()))
{
var select = cnn.Query($"select id from utenti");
if (select.Any())
{ return select[0].ToString(); }
else return "wrong";
}
}
I have also done various other tests and one of the difficulties in some cases is to call string ManagerFind() from LoadUsers.cs我还做了各种其他测试,在某些情况下的困难之一是从LoadUsers.cs调用字符串 ManagerFind()
Try something like this to get your rows and columns from your sql i know this is how you do it in SQL im sure there is a similar way to do it with sqlLite尝试这样的方法来从你的 sql 中获取你的行和列
using (SqlConnection connection = new SqlConnection(_sqlConnectionStringFromUserImput))
{
connection.Open();
if (connection.State == ConnectionState.Open)
{
SqlCommand sqlCommand =
new SqlCommand(
"select id from utenti",
connection)
{
CommandType = CommandType.Text,
CommandTimeout = 20
};
SqlDataReader reader = sqlCommand.ExecuteReader();
if (reader.HasRows)
{
while (reader.Read())
{
DateTime datetimefield = reader.GetFieldValue<DateTime>(0);
string stringField = reader.GetFieldValue<string>(1);
}
}
reader.Close();
}
connection.Close();
}
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