列に datapropertyname を設定したことを確認してください。これが私のコードです。これは正常に動作します form3.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace WindowsFormsApplication1
{
public partial class Form32 : Form
{
public Form32()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
DataTable dt = new DataTable("row");
dt.Columns.Add("Id", typeof(int));
dt.Columns.Add("UserName", typeof(string));
dt.Rows.Add(1, "Tamer");
dt.Rows.Add(2, "Foo");
ds.Tables.Add(dt);
dataGridView1.DataSource = ds;
dataGridView1.DataMember = "row";
}
private void Form3_Load(object sender, EventArgs e)
{
string fileName = @"C:\users\tamer\desktop\data.xml";
if (File.Exists(fileName))
{
DataSet ds = new DataSet();
ds.ReadXml(fileName);
dataGridView1.DataSource = ds;
dataGridView1.DataMember = "row";
}
}
private void Form3_FormClosed(object sender, FormClosedEventArgs e)
{
string fileName = @"C:\users\tamer\desktop\data.xml";
DataSet dataSet = (DataSet)dataGridView1.DataSource;
dataSet.WriteXml(fileName);
}
}
}
form3.designer.cs
namespace WindowsFormsApplication1 { partial class Form32 { /// /// 必要なデザイナー変数。/// プライベート System.ComponentModel.IContainer コンポーネント = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.dataGridView1 = new System.Windows.Forms.DataGridView();
this.button1 = new System.Windows.Forms.Button();
this.Id = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.UserName = new System.Windows.Forms.DataGridViewTextBoxColumn();
((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
this.SuspendLayout();
//
// dataGridView1
//
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
this.Id,
this.UserName});
this.dataGridView1.Location = new System.Drawing.Point(0, 0);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(582, 337);
this.dataGridView1.TabIndex = 0;
//
// button1
//
this.button1.Location = new System.Drawing.Point(246, 377);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 1;
this.button1.Text = "button1";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Id
//
this.Id.DataPropertyName = "Id";
this.Id.HeaderText = "Id";
this.Id.Name = "Id";
//
// UserName
//
this.UserName.DataPropertyName = "UserName";
this.UserName.HeaderText = "UserName";
this.UserName.Name = "UserName";
//
// Form32
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(632, 431);
this.Controls.Add(this.button1);
this.Controls.Add(this.dataGridView1);
this.Name = "Form32";
this.Text = "Form3";
this.Load += new System.EventHandler(this.Form3_Load);
this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.Form3_FormClosed);
((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.DataGridView dataGridView1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.DataGridViewTextBoxColumn Id;
private System.Windows.Forms.DataGridViewTextBoxColumn UserName;
}
}