C＃winforms DataGridView-当AutoGenerateColumns = true时如何使用DataSource类格式化双精度格式>> [

Question

我想根据我的自定义类为DataGridView自动创建所有列。一切正常，应该工作，但是我需要格式化和对齐单元格值。

因此，有一个属性可以添加到我的字段（HeightMeter）中，以便可以根据需要对齐和设置格式。为此，请在手动列创建代码中使用以下代码：

DataGridViewColumn.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleRight;DataGridViewColumn.DefaultCellStyle.Format =“ N2”;

[在使用AutoGenerateColumns解决方案时如何指定DefaultCellStyle属性-注意，我仅限于使用.net 2 :(

这里是我需要的东西和得到的东西的样本：

public partial class Form1 : Form
{
  private List<Person> people = new List<Person>();
  private DataGridView dataGridView1 = new DataGridView();
  private DataGridView dataGridView2 = new DataGridView();
  public Form1()
  {
    InitializeComponent();
    dataGridView1.Dock = DockStyle.Top;
    dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;

    dataGridView2.Dock = DockStyle.Top;
    dataGridView2.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;

    Controls.Add(dataGridView2);
    Controls.Add(dataGridView1);

    Load += new EventHandler(Form1_Load);
    Text = "";
  }

  private void Form1_Load(object sender, EventArgs e)
  {
    PopulateLists();
    dataGridView1.AutoGenerateColumns = true;
    dataGridView1.DataSource = people;

    CreateAndPopulateGrid2();
  }

  public void CreateAndPopulateGrid2()
  {
    DataGridViewColumn columnName = new DataGridViewTextBoxColumn();
    columnName.HeaderText = "Name";

    DataGridViewColumn columnHeight = new DataGridViewTextBoxColumn();
    columnHeight.HeaderText = "Height [m]";
    columnHeight.ValueType = typeof(double);

    columnHeight.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleRight;
    columnHeight.DefaultCellStyle.Format = "N2";
    dataGridView2.Rows.Clear();
    dataGridView2.Columns.Clear();
    dataGridView2.Columns.Add(columnName);
    dataGridView2.Columns.Add(columnHeight);

    DataGridViewRow row;
    foreach (Person p in people)
    {
      row = new DataGridViewRow();
      row.CreateCells(dataGridView2);
      row.Cells[0].Value = p.Name;
      row.Cells[1].Value = p.HeightMeter;
      dataGridView2.Rows.Add(row);
    }
  }

  private void PopulateLists()
  {
    people.Clear();
    people.Add(new Person("Harry", 1.7523));
    people.Add(new Person("Sally", 1.658));
    people.Add(new Person("Roy", 2.158));
    people.Add(new Person("Pris", 1.2584));
  }
}

class Person
{
  [System.ComponentModel.DisplayName("Name")]
  public string Name { get; set; }
  [System.ComponentModel.DisplayName("Height [m]")]
  public double HeightMeter { get; set; }

  public Person(string name, double heightMeter)
  {
    Name = name;
    HeightMeter = heightMeter;
  }
}

我想根据我的自定义类为DataGridView自动创建所有列。一切正常，但我需要格式化和对齐单元格值。所以有一个...

Answer 1

将DataAnnotations属性应用于DataGridView列