Question

I have a ListView and the ListView data is taken from database.
Beside the ListView got a button to add the record.

if the button is pressed it will show a dialog

Code :

private void bAddStudent_Click(object sender, EventArgs e) {
    fAddStudent addStudent = new fAddStudent();
    addStudent.ShowDialog();
}

After add the record, the dialog will close() and show the ListView.
But the ListView is not update the data.

Is there any way to make it auto update?

Edit :
Here is how I add records :

private void btnAdd_Click(object sender, EventArgs e) {
    string studentID = tbStudentId.Text;
    string studentName = tbStudentName.Text;
    string gender = tbGender.Text;

    string connectionString = "Data Source=xxx\\SQLEXPRESS;Initial Catalog=TestApplication;Integrated Security=SSPI; User ID=xxx;Password=xxx";

    using (SqlConnection connection = new SqlConnection(connectionString)) {
        SqlCommand cmd = new SqlCommand("INSERT INTO student (student_id, student_name, student_gender) VALUES (@studentId, @studentname, @studentGender) ");
        cmd.CommandType = CommandType.Text;
        cmd.Connection = connection;
        cmd.Parameters.AddWithValue("@studentId", studentID);
        cmd.Parameters.AddWithValue("@studentName", studentName);
        cmd.Parameters.AddWithValue("@studentGender", gender);
        connection.Open();
        cmd.ExecuteNonQuery();
    }
}

Code For showing ListView :

List<string> myListHeader = new List<string>(new string[] { "ID", "Name", "Gender" });
myListHeader.ForEach(name => lvStudent.Columns.Add(name));

SqlConnection UGIcon = new SqlConnection();
UGIcon.ConnectionString = "Data Source=xxx\\SQLEXPRESS;Initial Catalog=TestApplication;Integrated Security=SSPI; User ID=xxx\\user;Password=xxx";
UGIcon.Open();

SqlCommand cmd = new SqlCommand("SELECT * FROM student", UGIcon);

SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read()) {
    ListViewItem item = new ListViewItem(dr[0].ToString());
    item.SubItems.Add(dr[1].ToString());
    item.SubItems.Add(dr[2].ToString());
    lvStudent.Items.Add(item);
}

Note

‘Add data’ form is different with showing the ListView form, so I cannot access the ListView in the ‘add data’ form

Answer 1

You need to call databind() method every time you want your data to be refreshed.

From what I understood you a)show the data, b) add new record to database but new record is not shown. If this is the case just call DataBind() method and it should work.