1 
ModelLinkControl modelLinkControl = new ModelLinkControl();
modelLinkControl.bindingSourceCModels.DataSource = cModels;
modelLinkControl.bindingSourceAModels.DataSource = aModels;
modelLinkControl.bindingSourceModelLinks.DataSource = modelLinks;

modelLinks はList<MyClass>3 つのプロパティを含むです。ID、aID、cID。aID と cID は、対応する の DataPropertyName に使用されますDataGridColum。aModel と cModel にはList<AnotherClass>2 つのプロパティが含まれています。対応するValueMember = "ID"とで使用する ID と名前。DisplayMember = "Name"ComboBox

上記のスニペットの最後の行で、次のようになります。

System.ArgumentException occurred
  Message=Field called ID does not exist.
  Source=System.Windows.Forms
  StackTrace:
       at System.Windows.Forms.DataGridViewComboBoxCell.InitializeValueMemberPropertyDescriptor(String valueMember)
       at System.Windows.Forms.DataGridViewComboBoxCell.OnDataGridViewChanged()
       at System.Windows.Forms.DataGridViewRowCollection.AddInternal(DataGridViewRow dataGridViewRow)
       at System.Windows.Forms.DataGridView.RefreshRows(Boolean scrollIntoView)
       at System.Windows.Forms.DataGridView.RefreshColumnsAndRows()
       at System.Windows.Forms.DataGridView.DataGridViewDataConnection.ProcessListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.DataGridView.DataGridViewDataConnection.currencyManager_ListChanged(Object sender, ListChangedEventArgs e)
       at System.Windows.Forms.CurrencyManager.OnListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.CurrencyManager.List_ListChanged(Object sender, ListChangedEventArgs e)
       at System.Windows.Forms.BindingSource.OnListChanged(ListChangedEventArgs e)
       at System.Windows.Forms.BindingSource.ResetBindings(Boolean metadataChanged)
       at System.Windows.Forms.BindingSource.SetList(IList list, Boolean metaDataChanged, Boolean applySortAndFilter)
       at System.Windows.Forms.BindingSource.ResetList()
       at System.Windows.Forms.BindingSource.set_DataSource(Object value)
  InnerException:

すべてのフィールド、クラス、およびプロパティのスペルをチェックしました。デザイナですべての列を削除し、すべてのスペルを注意深く確認しながら再度追加しました。modelLinks からの ID は、aModels と cModels に存在します。また、3 つのリストすべてで からList<>に変更してみました。BindingList<>そして、同じエラーが発生し続けます。

削除するValueMember = "ID"と、別のエラーが発生します（AnotherClassa と一致しないためGuid）。

次は何を試せばいいのかわからない…

デザイナーが生成:

// 
// dataGridViewModels
// 
this.dataGridViewModels.AllowUserToAddRows = false;
this.dataGridViewModels.AllowUserToDeleteRows = false;
this.dataGridViewModels.AutoGenerateColumns = false;
this.dataGridViewModels.CellBorderStyle = System.Windows.Forms.DataGridViewCellBorderStyle.None;
this.dataGridViewModels.ColumnHeadersBorderStyle = System.Windows.Forms.DataGridViewHeaderBorderStyle.None;
this.dataGridViewModels.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridViewModels.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
this.ColumnC,
this.ColumnA});
this.dataGridViewModels.DataSource = this.bindingSourceModelLinks;
this.dataGridViewModels.Dock = System.Windows.Forms.DockStyle.Fill;
this.dataGridViewModels.Location = new System.Drawing.Point(0, 0);
this.dataGridViewModels.Name = "dataGridViewModels";
this.dataGridViewModels.RowHeadersVisible = false;
this.dataGridViewModels.Size = new System.Drawing.Size(794, 445);
this.dataGridViewModels.TabIndex = 0;
// 
// ColumnC
// 
this.ColumnC.DataPropertyName = "cID";
this.ColumnC.DataSource = this.bindingSourceCModels;
this.ColumnC.HeaderText = "cModel";
this.ColumnC.Name = "ColumnC";
this.ColumnC.DisplayMember = "Name";
this.ColumnC.ValueMember = "ID";
// 
// ColumnA
// 
this.ColumnA.DataPropertyName = "aID";
this.ColumnA.DataSource = this.bindingSourceAModels;
this.ColumnA.HeaderText = "aModel";
this.ColumnA.Name = "ColumnA";
this.ColumnA.DisplayMember = "Name";
this.ColumnA.ValueMember = "ID";
4

1 に答える 1

2

私はちょうどこれをやった：

Form1.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;

namespace TestDataGridView
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            this.PopulateDataGrid();
        }

        private void PopulateDataGrid()
        {
            List<BindID> bindList = new List<BindID>();
            List<ClassA> aList = new List<ClassA>();
            List<ClassB> bList = new List<ClassB>();

            for (int i = 0; i < 10; i++)
            {
               ClassA newClassA = new ClassA() { ID = Guid.NewGuid(), Name = i.ToString() };
               ClassB newClassB = new ClassB() { ID = Guid.NewGuid(), Name = i.ToString() };
               BindID newBindID = new BindID() { ID = Guid.NewGuid(), AID = newClassA.ID, BID = newClassB.ID };

               bList.Add(newClassB);
               aList.Add(newClassA);
               bindList.Add(newBindID);
            }

            bindingSourceA.DataSource = aList;
            ColumnA.ValueMember = "ID";
            ColumnA.DisplayMember = "Name";

            bindingSourceB.DataSource = bList;
            ColumnB.ValueMember = "ID";
            ColumnB.DisplayMember = "Name";

            bindingSourceBindID.DataSource = bindList;
        }
    }

    public class BindID
    {
        public Guid ID { get; set; }
        public Guid AID { get; set; }
        public Guid BID { get; set; }
    }
    public class ClassA
    {
        public Guid ID { get; set; }
        public string Name { get; set; }
    }
    public class ClassB
    {
        public Guid ID { get; set; }
        public string Name { get; set; }
    }
}

Form1.Designer.cs

namespace TestDataGridView
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = 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.components = new System.ComponentModel.Container();
            this.dataGridView1 = new System.Windows.Forms.DataGridView();
            this.bindingSourceBindID = new System.Windows.Forms.BindingSource(this.components);
            this.bindingSourceA = new System.Windows.Forms.BindingSource(this.components);
            this.bindingSourceB = new System.Windows.Forms.BindingSource(this.components);
            this.ColumnA = new System.Windows.Forms.DataGridViewComboBoxColumn();
            this.ColumnB = new System.Windows.Forms.DataGridViewComboBoxColumn();
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.bindingSourceBindID)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.bindingSourceA)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.bindingSourceB)).BeginInit();
            this.SuspendLayout();
            // 
            // dataGridView1
            // 
            this.dataGridView1.AutoGenerateColumns = false;
            this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
            this.ColumnA,
            this.ColumnB});
            this.dataGridView1.DataSource = this.bindingSourceBindID;
            this.dataGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.dataGridView1.Location = new System.Drawing.Point(0, 0);
            this.dataGridView1.Name = "dataGridView1";
            this.dataGridView1.Size = new System.Drawing.Size(709, 407);
            this.dataGridView1.TabIndex = 0;
            // 
            // ColumnA
            // 
            this.ColumnA.DataPropertyName = "AID";
            this.ColumnA.DataSource = this.bindingSourceA;
            this.ColumnA.HeaderText = "ColumnA";
            this.ColumnA.Name = "ColumnA";
            // 
            // ColumnB
            // 
            this.ColumnB.DataPropertyName = "BID";
            this.ColumnB.DataSource = this.bindingSourceB;
            this.ColumnB.HeaderText = "ColumnB";
            this.ColumnB.Name = "ColumnB";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(709, 407);
            this.Controls.Add(this.dataGridView1);
            this.Name = "Form1";
            this.Text = "Form1";
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.bindingSourceBindID)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.bindingSourceA)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.bindingSourceB)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.DataGridView dataGridView1;
        private System.Windows.Forms.BindingSource bindingSourceBindID;
        private System.Windows.Forms.BindingSource bindingSourceA;
        private System.Windows.Forms.BindingSource bindingSourceB;
        private System.Windows.Forms.DataGridViewComboBoxColumn ColumnA;
        private System.Windows.Forms.DataGridViewComboBoxColumn ColumnB;
    }
}

新しい別のプロジェクトでは、それは魅力のように機能します。少なくとも、それは私が何か間違ったことをしていることを示しており、それは私が上で提供していないプロジェクト内の何かに関連している可能性があります. DataGrid にデータを入力する方法とは関係ありません。

この質問を終了し、狩りを続けます。

更新（解決策）： [BrowsableAttribute(false)]悪です！:P 振り返ってみると、それはちょっと明白です。クラスを PropertyGrid に表示するときに ID を非表示にしたかったのですが、他のコントロールにも影響を与えるとは考えていませんでした。本当に属性をさらに勉強する必要があります...

于 2011-08-04T09:04:24.080 に答える