[Mono-bugs] [Bug 457058] New: Mono DataGridView return incorrect value from DataBoundItem after order columns

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Sat Dec 6 13:48:45 EST 2008


https://bugzilla.novell.com/show_bug.cgi?id=457058


           Summary: Mono DataGridView return incorrect value from
                    DataBoundItem after order columns
           Product: Mono: Class Libraries
           Version: 2.0.x
          Platform: PC
        OS/Version: openSUSE 11.0
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: rodrigosilvabrito at hotmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: DeveloperNet


Created an attachment (id=258448)
 --> (https://bugzilla.novell.com/attachment.cgi?id=258448)
Sample Source Code

Description of Problem:

In MS's runtime this code work fine!

Steps to reproduce the problem:

1. Generate and compile the code!

-- Program.cs

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace DataGridViewProblem
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new frmDataGridProblem());
        }
    }
}

-- DataGridViewProblem.cs

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

namespace DataGridViewProblem
{
    public partial class frmDataGridProblem : Form
    {
        BindingList<Cash> list;

        public frmDataGridProblem()
        {
            InitializeComponent();

            list = new BindingList<Cash>();

            for (int i = 0; i <= 100; i++)
            {
                Cash cash = new Cash();
                cash.Date = DateTime.Now;
                cash.Memo = "Memo "  + i.ToString();
                cash.Increase = i;
                cash.Reduce = 0;

                list.Add(cash);
            }

            dgvList.DataSource = list;
        }

        public Cash Selected
        {
            get
            {
                return this.dgvList.CurrentRow.DataBoundItem as Cash;
            }
            set
            {
                for (int i = 0; i < this.dgvList.Rows.Count; i++)
                {
                    if (value == dgvList.Rows[i].DataBoundItem as Cash)
                    {
                        dgvList.Rows[i].Selected = true;
                        dgvList.CurrentCell = dgvList.Rows[i].Cells[0];
                        break;
                    }
                }
            }
        }

        private void Find(string lookFor)
        {
            foreach (Cash cash in this.list)
            {
                if (lookFor.Length <= cash.Memo.Length)
                {
                    if (cash.Memo.Substring(0, lookFor.Length) == lookFor)
                    {
                        this.Selected = cash;
                        return;
                    }
                }
            }
        }

        private void tsbFind_Click(object sender, EventArgs e)
        {
            this.Find(tscLookFor.Text);
        }

        private void tscLookFor_TextChanged(object sender, EventArgs e)
        {
            if (tscLookFor.Text.Length > 0)
            {
                tsbFind.Enabled = true;
                this.Find(tscLookFor.Text);
            }
            else
            {
                tsbFind.Enabled = false;
                if (dgvList.Rows.Count > 0)
                {
                    dgvList.Rows[0].Selected = true;
                    dgvList.CurrentCell = dgvList.Rows[0].Cells[0];
                }
            }
        }

        private void tsbShowCurrent_Click(object sender, EventArgs e)
        {
            MessageBox.Show(this.Selected.Memo);
        }
    }

    public class Cash
    {
        private Nullable<DateTime> date = DateTime.Today;
        private string memo = string.Empty;
        private decimal increase = 0;
        private decimal reduce = 0;

        public Nullable<DateTime> Date
        {
            get { return date; }
            set { date = value; }
        }

        public string Memo
        {
            get { return memo; }
            set { memo = value; }
        }

        public decimal Increase
        {
            get { return increase; }
            set { increase = value; }
        }

        public decimal Reduce
        {
            get { return reduce; }
            set { reduce = value; }
        }
    }
}

-- DataGridViewProblem.Designer.cs

namespace DataGridViewProblem
{
    partial class frmDataGridProblem
    {
        /// <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()
        {
            System.ComponentModel.ComponentResourceManager resources = new
System.ComponentModel.ComponentResourceManager(typeof(frmDataGridProblem));
            System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle1 =
new System.Windows.Forms.DataGridViewCellStyle();
            System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle2 =
new System.Windows.Forms.DataGridViewCellStyle();
            System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle3 =
new System.Windows.Forms.DataGridViewCellStyle();
            System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle4 =
new System.Windows.Forms.DataGridViewCellStyle();
            this.toolStrip1 = new System.Windows.Forms.ToolStrip();
            this.tslSearch = new System.Windows.Forms.ToolStripLabel();
            this.tscLookFor = new System.Windows.Forms.ToolStripComboBox();
            this.tsbFind = new System.Windows.Forms.ToolStripButton();
            this.tsbShowCurrent = new System.Windows.Forms.ToolStripButton();
            this.dgvList = new System.Windows.Forms.DataGridView();
            this.toolStrip1.SuspendLayout();
           
((System.ComponentModel.ISupportInitialize)(this.dgvList)).BeginInit();
            this.SuspendLayout();
            // 
            // toolStrip1
            // 
            this.toolStrip1.GripStyle =
System.Windows.Forms.ToolStripGripStyle.Hidden;
            this.toolStrip1.Items.AddRange(new
System.Windows.Forms.ToolStripItem[] {
            this.tslSearch,
            this.tscLookFor,
            this.tsbFind,
            this.tsbShowCurrent});
            this.toolStrip1.Location = new System.Drawing.Point(0, 0);
            this.toolStrip1.Name = "toolStrip1";
            this.toolStrip1.Size = new System.Drawing.Size(584, 25);
            this.toolStrip1.TabIndex = 0;
            this.toolStrip1.TabStop = true;
            // 
            // tslSearch
            // 
            this.tslSearch.Name = "tslSearch";
            this.tslSearch.Size = new System.Drawing.Size(60, 22);
            this.tslSearch.Text = "Look for:  ";
            // 
            // tscLookFor
            // 
            this.tscLookFor.FlatStyle =
System.Windows.Forms.FlatStyle.Standard;
            this.tscLookFor.Name = "tscLookFor";
            this.tscLookFor.Size = new System.Drawing.Size(121, 25);
            this.tscLookFor.TextChanged += new
System.EventHandler(this.tscLookFor_TextChanged);
            // 
            // tsbFind
            // 
            this.tsbFind.DisplayStyle =
System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.tsbFind.Enabled = false;
            this.tsbFind.Image =
((System.Drawing.Image)(resources.GetObject("tsbFind.Image")));
            this.tsbFind.ImageTransparentColor = System.Drawing.Color.Magenta;
            this.tsbFind.Name = "tsbFind";
            this.tsbFind.Size = new System.Drawing.Size(34, 22);
            this.tsbFind.Text = "&Find";
            this.tsbFind.Click += new System.EventHandler(this.tsbFind_Click);
            // 
            // tsbShowCurrent
            // 
            this.tsbShowCurrent.Alignment =
System.Windows.Forms.ToolStripItemAlignment.Right;
            this.tsbShowCurrent.DisplayStyle =
System.Windows.Forms.ToolStripItemDisplayStyle.Text;
            this.tsbShowCurrent.Image =
((System.Drawing.Image)(resources.GetObject("tsbShowCurrent.Image")));
            this.tsbShowCurrent.ImageTransparentColor =
System.Drawing.Color.Magenta;
            this.tsbShowCurrent.Name = "tsbShowCurrent";
            this.tsbShowCurrent.Size = new System.Drawing.Size(81, 22);
            this.tsbShowCurrent.Text = "Show current";
            this.tsbShowCurrent.Click += new
System.EventHandler(this.tsbShowCurrent_Click);
            // 
            // dgvList
            // 
            this.dgvList.AllowUserToAddRows = false;
            this.dgvList.AllowUserToDeleteRows = false;
            this.dgvList.AllowUserToOrderColumns = true;
            this.dgvList.AllowUserToResizeRows = false;
            dataGridViewCellStyle1.BackColor =
System.Drawing.Color.FromArgb(((int)(((byte)(238)))), ((int)(((byte)(238)))),
((int)(((byte)(238)))));
            this.dgvList.AlternatingRowsDefaultCellStyle =
dataGridViewCellStyle1;
            this.dgvList.BackgroundColor = System.Drawing.Color.GhostWhite;
            this.dgvList.BorderStyle = System.Windows.Forms.BorderStyle.None;
            this.dgvList.ColumnHeadersBorderStyle =
System.Windows.Forms.DataGridViewHeaderBorderStyle.Single;
            dataGridViewCellStyle2.BackColor =
System.Drawing.Color.LightSteelBlue;
            dataGridViewCellStyle2.Font = new System.Drawing.Font("Tahoma",
8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point,
((byte)(0)));
            dataGridViewCellStyle2.ForeColor =
System.Drawing.SystemColors.ControlDarkDark;
            dataGridViewCellStyle2.SelectionBackColor =
System.Drawing.SystemColors.Highlight;
            dataGridViewCellStyle2.SelectionForeColor =
System.Drawing.SystemColors.HighlightText;
            dataGridViewCellStyle2.WrapMode =
System.Windows.Forms.DataGridViewTriState.True;
            this.dgvList.ColumnHeadersDefaultCellStyle =
dataGridViewCellStyle2;
            this.dgvList.ColumnHeadersHeight = 20;
            this.dgvList.ColumnHeadersHeightSizeMode =
System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.DisableResizing;
            this.dgvList.Dock = System.Windows.Forms.DockStyle.Fill;
            this.dgvList.Location = new System.Drawing.Point(0, 25);
            this.dgvList.MultiSelect = false;
            this.dgvList.Name = "dgvList";
            this.dgvList.RowHeadersBorderStyle =
System.Windows.Forms.DataGridViewHeaderBorderStyle.None;
            dataGridViewCellStyle3.BackColor =
System.Drawing.SystemColors.ButtonFace;
            dataGridViewCellStyle3.Font = new System.Drawing.Font("Tahoma",
8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point,
((byte)(0)));
            dataGridViewCellStyle3.ForeColor =
System.Drawing.SystemColors.WindowText;
            dataGridViewCellStyle3.SelectionBackColor =
System.Drawing.SystemColors.Highlight;
            dataGridViewCellStyle3.SelectionForeColor =
System.Drawing.SystemColors.HighlightText;
            dataGridViewCellStyle3.WrapMode =
System.Windows.Forms.DataGridViewTriState.True;
            this.dgvList.RowHeadersDefaultCellStyle = dataGridViewCellStyle3;
            this.dgvList.RowHeadersVisible = false;
            this.dgvList.RowHeadersWidth = 4;
            dataGridViewCellStyle4.SelectionBackColor =
System.Drawing.Color.FromArgb(((int)(((byte)(37)))), ((int)(((byte)(73)))),
((int)(((byte)(84)))));
            dataGridViewCellStyle4.SelectionForeColor =
System.Drawing.Color.White;
            this.dgvList.RowsDefaultCellStyle = dataGridViewCellStyle4;
            this.dgvList.RowTemplate.DefaultCellStyle.Font = new
System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular,
System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.dgvList.RowTemplate.Height = 18;
            this.dgvList.SelectionMode =
System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
            this.dgvList.Size = new System.Drawing.Size(584, 347);
            this.dgvList.TabIndex = 1;
            // 
            // frmDataGridProblem
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(584, 372);
            this.Controls.Add(this.dgvList);
            this.Controls.Add(this.toolStrip1);
            this.Name = "frmDataGridProblem";
            this.StartPosition =
System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "DataGridView not is selecting the row!";
            this.toolStrip1.ResumeLayout(false);
            this.toolStrip1.PerformLayout();
           
((System.ComponentModel.ISupportInitialize)(this.dgvList)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.ToolStrip toolStrip1;
        private System.Windows.Forms.ToolStripButton tsbShowCurrent;
        private System.Windows.Forms.DataGridView dgvList;
        private System.Windows.Forms.ToolStripLabel tslSearch;
        private System.Windows.Forms.ToolStripButton tsbFind;
        private System.Windows.Forms.ToolStripComboBox tscLookFor;
    }
}

2. Execute the program, when executed in Mono after clicked in Column Header
"Memo" DataGridView order data following:

Memo

Memo 0
Memo 1
Memo 10
Memo 100 --> row 3
Memo 11
Memo 12
Memo 13
etc...

If we click in row 3 with data in memo column = "Memo 100" for select and then
click in button "Show Current", DataBoundItem return incorrect value of row
selected, this is returning value from row 24.

Actual Results:
      this.dgvList.CurrentRow.DataBoundItem is returning incorrect value after
order columns.

Expected Results:
      Is expected --> this.dgvList.CurrentRow.DataBoundItem return the Entity
Object correct after order columns.


How often does this happen? 
Ever, All;


Additional Information:
    In MS's runtime this code work fine!


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