如何：设置 Windows 窗体 DataGridView 控件的大小模式

以下过程演示了一些常见方案，这些方案可自定义或合并控件 DataGridView 中可用于控件和特定列的大小调整选项。

创建固定宽度列

• 将AutoSizeMode属性设置为None，将Resizable属性设置为False，将ReadOnly属性设置为true，并将Width属性设置为适当的值。

  DataGridViewTextBoxColumn idColumn =
      new DataGridViewTextBoxColumn();
  idColumn.HeaderText = "ID";
  idColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
  idColumn.Resizable = DataGridViewTriState.False;
  idColumn.ReadOnly = true;
  idColumn.Width = 20;
  

  Dim idColumn As New DataGridViewTextBoxColumn()
  idColumn.HeaderText = "ID"
  idColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None
  idColumn.Resizable = DataGridViewTriState.False
  idColumn.ReadOnly = True
  idColumn.Width = 20
  

创建一个可以自动调整大小以适应其内容的列

• 将 AutoSizeMode 属性设置为基于内容的大小调整模式。

  DataGridViewTextBoxColumn titleColumn =
      new DataGridViewTextBoxColumn();
  titleColumn.HeaderText = "Title";
  titleColumn.AutoSizeMode =
      DataGridViewAutoSizeColumnMode.AllCellsExceptHeader;
  

  Dim titleColumn As New DataGridViewTextBoxColumn()
  titleColumn.HeaderText = "Title"
  titleColumn.AutoSizeMode = _
      DataGridViewAutoSizeColumnMode.AllCellsExceptHeader
  

为不同大小和重要性的值创建自适应填充列

• 将 DataGridView.AutoSizeColumnsMode 属性设置为 Fill 为所有不重写此值的列设置大小模式。 将 FillWeight 列的属性设置为与其平均内容宽度成正比的值。 设置 MinimumWidth 重要列的属性以确保部分内容显示。

  dataGridView1.AutoSizeColumnsMode =
      DataGridViewAutoSizeColumnsMode.Fill;
  
  DataGridViewTextBoxColumn subTitleColumn =
      new DataGridViewTextBoxColumn();
  subTitleColumn.HeaderText = "Subtitle";
  subTitleColumn.MinimumWidth = 50;
  subTitleColumn.FillWeight = 100;
  
  DataGridViewTextBoxColumn summaryColumn =
      new DataGridViewTextBoxColumn();
  summaryColumn.HeaderText = "Summary";
  summaryColumn.MinimumWidth = 50;
  summaryColumn.FillWeight = 200;
  
  DataGridViewTextBoxColumn contentColumn =
      new DataGridViewTextBoxColumn();
  contentColumn.HeaderText = "Content";
  contentColumn.MinimumWidth = 50;
  contentColumn.FillWeight = 300;
  

  dataGridView1.AutoSizeColumnsMode = _
      DataGridViewAutoSizeColumnsMode.Fill
  
  Dim subTitleColumn As new DataGridViewTextBoxColumn()
  subTitleColumn.HeaderText = "Subtitle"
  subTitleColumn.MinimumWidth = 50
  subTitleColumn.FillWeight = 100
  
  Dim summaryColumn As new DataGridViewTextBoxColumn()
  summaryColumn.HeaderText = "Summary"
  summaryColumn.MinimumWidth = 50
  summaryColumn.FillWeight = 200
  
  Dim contentColumn As new DataGridViewTextBoxColumn()
  contentColumn.HeaderText = "Content"
  contentColumn.MinimumWidth = 50
  contentColumn.FillWeight = 300
  

示例：

下面的完整代码示例提供了一个演示应用程序，可帮助你了解本主题中所述的大小调整选项。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form
{
    [STAThreadAttribute()]
    public static void Main()
    {
        Application.Run(new Form1());
    }

    private DataGridView dataGridView1 = new DataGridView();

    public Form1()
    {
        dataGridView1.Dock = DockStyle.Fill;
        Controls.Add(dataGridView1);
        Width *= 2;
        Text = "DataGridView Sizing Scenarios";
    }

    protected override void OnLoad(EventArgs e)
    {
        DataGridViewTextBoxColumn idColumn =
            new DataGridViewTextBoxColumn();
        idColumn.HeaderText = "ID";
        idColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
        idColumn.Resizable = DataGridViewTriState.False;
        idColumn.ReadOnly = true;
        idColumn.Width = 20;

        DataGridViewTextBoxColumn titleColumn =
            new DataGridViewTextBoxColumn();
        titleColumn.HeaderText = "Title";
        titleColumn.AutoSizeMode =
            DataGridViewAutoSizeColumnMode.AllCellsExceptHeader;

        dataGridView1.AutoSizeColumnsMode =
            DataGridViewAutoSizeColumnsMode.Fill;

        DataGridViewTextBoxColumn subTitleColumn =
            new DataGridViewTextBoxColumn();
        subTitleColumn.HeaderText = "Subtitle";
        subTitleColumn.MinimumWidth = 50;
        subTitleColumn.FillWeight = 100;

        DataGridViewTextBoxColumn summaryColumn =
            new DataGridViewTextBoxColumn();
        summaryColumn.HeaderText = "Summary";
        summaryColumn.MinimumWidth = 50;
        summaryColumn.FillWeight = 200;

        DataGridViewTextBoxColumn contentColumn =
            new DataGridViewTextBoxColumn();
        contentColumn.HeaderText = "Content";
        contentColumn.MinimumWidth = 50;
        contentColumn.FillWeight = 300;

        dataGridView1.Columns.AddRange(new DataGridViewTextBoxColumn[] {
            idColumn, titleColumn, subTitleColumn,
            summaryColumn, contentColumn });
        dataGridView1.Rows.Add(new String[] { "1",
            "A Short Title", "A Longer SubTitle",
            "A short description of the main point.",
            "The full contents of the topic, with detailed examples." });

        base.OnLoad(e);
    }
}

Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New Form1())
    End Sub

    Private dataGridView1 As New DataGridView()

    Public Sub New()
        dataGridView1.Dock = DockStyle.Fill
        Controls.Add(dataGridView1)
        Width *= 2
        Text = "DataGridView Sizing Scenarios"
    End Sub

    Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)

        Dim idColumn As New DataGridViewTextBoxColumn()
        idColumn.HeaderText = "ID"
        idColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None
        idColumn.Resizable = DataGridViewTriState.False
        idColumn.ReadOnly = True
        idColumn.Width = 20

        Dim titleColumn As New DataGridViewTextBoxColumn()
        titleColumn.HeaderText = "Title"
        titleColumn.AutoSizeMode = _
            DataGridViewAutoSizeColumnMode.AllCellsExceptHeader

        dataGridView1.AutoSizeColumnsMode = _
            DataGridViewAutoSizeColumnsMode.Fill

        Dim subTitleColumn As new DataGridViewTextBoxColumn()
        subTitleColumn.HeaderText = "Subtitle"
        subTitleColumn.MinimumWidth = 50
        subTitleColumn.FillWeight = 100

        Dim summaryColumn As new DataGridViewTextBoxColumn()
        summaryColumn.HeaderText = "Summary"
        summaryColumn.MinimumWidth = 50
        summaryColumn.FillWeight = 200

        Dim contentColumn As new DataGridViewTextBoxColumn()
        contentColumn.HeaderText = "Content"
        contentColumn.MinimumWidth = 50
        contentColumn.FillWeight = 300

        dataGridView1.Columns.AddRange(New DataGridViewTextBoxColumn() { _
            idColumn, titleColumn, subTitleColumn, _
            summaryColumn, contentColumn})
        dataGridView1.Rows.Add(New String() {"1", _
            "A Short Title", "A Longer SubTitle", _
            "A short description of the main point.", _
            "The full contents of the topic, with detailed examples."})

        MyBase.OnLoad(e)
    End Sub
End Class

若要使用此演示应用程序，请执行以下操作：

• 更改窗体大小。 观察填充模式的列如何更改其宽度，同时保持属性值所指示的 FillWeight 的比例。 观察列 MinimumWidth 在窗体太小时如何防止其更改。

• 通过使用鼠标拖动列分隔符来更改列大小。 观察一些列无法调整大小的情况，以及可调整的列不能窄于其最小宽度的现象。

编译代码

此示例需要：

• 对 System 和 System.Windows.Forms 程序集的引用。

另请参阅

• DataGridView
• DataGridViewColumn.AutoSizeMode
• DataGridViewAutoSizeColumnMode
• DataGridViewColumn.Resizable
• DataGridViewColumn.ReadOnly
• DataGridViewColumn.Width
• DataGridViewColumn.FillWeight
• DataGridViewColumn.MinimumWidth