當複選框被選中時顯示特定的列

Question

我想在連接到MS Access的dataGridView上顯示一個特定的列（例如出生日期），當選中複選框（出生日期複選框）時。如果它是一個數組，它會有更多幫助，因爲我想添加多個複選框。

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) 
     { 
     } 
    } 
} 

謝謝。

Answer 1

解決方案：

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); 
    } 
    } 
}