在DataGridView中顯示（姓氏，名字）

Question

DataGridView使用bindingSource連接到數據庫。

dataGridView1.DataSource = bindingSource1; 
    GetData("SELECT [last_name] + ', ' + [first_name] AS [NAME], patient_id AS [CHART#], birth_date AS [DOB] FROM patient"); 


    private void GetData(string selectCommand) 
    { 
     try 
     { 
      // Specify a connection string. Replace the given value with a 
      // valid connection string for a Northwind SQL Server sample 
      // database accessible to your system. 

      // Create a new data adapter based on the specified query. 
      dataAdapter = new OleDbDataAdapter(selectCommand, DQLCommon.ConnectionString); 

      // Create a command builder to generate SQL update, insert, and 
      // delete commands based on selectCommand. These are used to 
      // update the database. 
      OleDbCommandBuilder commandBuilder = new OleDbCommandBuilder(dataAdapter); 

      // Populate a new data table and bind it to the BindingSource. 
      DataTable table = new DataTable(); 
      table.Locale = System.Globalization.CultureInfo.InvariantCulture; 
      dataAdapter.Fill(table); 
      bindingSource1.DataSource = table; 
      DataGridViewColumn column1 = dataGridView1.Columns[0]; 
      column1.Width = Convert.ToInt16(Convert.ToDouble(dataGridView1.Width) * 0.5); 
      DataGridViewColumn column2 = dataGridView1.Columns[1]; 
      column2.Width = Convert.ToInt16(Convert.ToDouble(dataGridView1.Width) * 0.23); 
      DataGridViewColumn column3 = dataGridView1.Columns[2]; 
      column3.Width = Convert.ToInt16(Convert.ToDouble(dataGridView1.Width) * 0.27); 
     } 
     catch (OleDbException) 
     { 
      MessageBox.Show("Failed in loading patient list."); 
     } 
    } 

我所期望的名稱顯示爲<姓>，<名>，而是由句點分隔（。）不是逗號（，）像下面的圖片。

我怎麼能解決這個問題？

Answer 1

GetData("SELECT [last_name] + ', ' + [first_name] AS [NAME], patient_id AS [CHART#], birth_date AS [DOB] FROM patient"); 

GetData命令中有一個逗號。嘗試使用一個。 ：

GetData("SELECT [last_name] + '. ' + [first_name] AS [NAME], patient_id AS [CHART#], birth_date AS [DOB] FROM patient");