Anzeige spezifische Spalte, wenn das Kontrollkästchen aktiviert ist

Question

Ich möchte eine bestimmte Spalte (Geburtsdatum, für ein Beispiel) auf einem DataGridView anzeigen, das mit MS Access verbunden ist, wenn ein Kontrollkästchen (Geburtsdatum Kontrollkästchen) aktiviert ist. Es würde viel mehr helfen, wenn es ein Array wäre, weil ich mehr als ein Kontrollkästchen hinzufügen möchte.

namespace emp_db1 
{ 
    public partial class Print : Form 
    { 

     private OleDbConnection connection = new OleDbConnection(); 
     public Print() 
     { 
      InitializeComponent(); 
      connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source = emp_0.mdb"; 
     } 
     DataTable ds; 
     private void Print_Load(object sender, EventArgs e) 
     { 
      try 
      { 
       connection.Open(); 
       OleDbCommand command = new OleDbCommand(); 
       command.Connection = connection; 
       command.CommandText = "SELECT ID, Name, DOB FROM emp_per"; 
       OleDbDataAdapter da = new OleDbDataAdapter(command); 
       ds = new DataTable(); 
       da.Fill(ds); 
       dataGridView1.DataSource = ds; 
       da.Update(ds); 
       connection.Close(); 
       dataGridView1.AutoResizeColumns(); 
       dataGridView1.AutoResizeColumnHeadersHeight(); 
       foreach (DataGridViewColumn col in dataGridView1.Columns) 
       { 
        col.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter; 
        col.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter; 
       } 
       this.dataGridView1.Sort(this.dataGridView1.Columns[0], ListSortDirection.Ascending); 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show("Error " + ex); 
      } 
     } 
     private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) 
     { 
     } 
     private void dob_check_CheckedChanged(object sender, EventArgs e) 
     { 
     } 
    } 
} 

danke.

Answer 1

Lösung:

namespace emp_db1 
{ 
    public partial class Print : Form 
{ 
    List<CheckBox> chkboxes = new List<CheckBox>(); 


    private OleDbConnection connection = new OleDbConnection(); 
    public Print() 
    { 
     InitializeComponent(); 
     connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source = emp_0.mdb"; 

    } 
    DataTable ds; 

    private void Print_Load(object sender, EventArgs e) 
    { 

    chkboxes.Add(dob_check); //0 
    chkboxes.Add(mother_check); //1 

     try 
     { 
      connection.Open(); 
      OleDbCommand command = new OleDbCommand(); 
      command.Connection = connection; 
      command.CommandText = "SELECT ID, Name, DOB, Mother FROM emp_per"; 
      OleDbDataAdapter da = new OleDbDataAdapter(command); 
      ds = new DataTable(); 
      da.Fill(ds); 
      dataGridView1.DataSource = ds; 
      da.Update(ds); 
      connection.Close(); 
      dataGridView1.AutoResizeColumns(); 
      dataGridView1.AutoResizeColumnHeadersHeight(); 

      foreach (DataGridViewColumn col in dataGridView1.Columns) 
      { 
       col.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter; 
       col.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter; 
      } 
      this.dataGridView1.Sort(this.dataGridView1.Columns[0], ListSortDirection.Ascending); 

     } 
     catch (Exception ex) 
     { 
      MessageBox.Show("Error " + ex); 
     } 
    } 


    private void refreshCheckBoxes(int id) 
    { 
     for(int x = 0; x < 2; x++) 
     { 
      if (!chkboxes[x].Checked) dataGridView1.Columns[x+2].Visible = false; else dataGridView1.Columns[x+2].Visible = true; 

     } 
    } 

    private void dataGridView1_CellContentClick_1(object sender, DataGridViewCellEventArgs e) 
    { 
    } 
    private void dob_check_CheckedChanged(object sender, EventArgs e) 
    { 
     refreshCheckBoxes(0); 
    } 

    private void mother_check_CheckedChanged(object sender, EventArgs e) 
    { 
     refreshCheckBoxes(1); 
    } 
    } 
}