FormDataGridViewColumnDemo.cs

using System.Windows.Forms;
using System;
using System.Drawing;

namespace UnitTestInversions
{
    public class FormDataGridViewColumnDemo : Form
    {
        #region "set up form"
        public FormDataGridViewColumnDemo()
        {
            InitializeComponent();

            AddButton(Button1, "Reset",
                new EventHandler(ResetToDisorder));
            AddButton(Button2, "Change Column 3 Header",
                new EventHandler(ChangeColumn3Header));
            AddButton(Button3, "Change Meatloaf Recipe",
                new EventHandler(ChangeMeatloafRecipe));
            AddAdditionalButtons();

            InitializeDataGridView();
        }

        DataGridView dataGridView;
        Button Button1 = new Button();
        Button Button2 = new Button();
        Button Button3 = new Button();
        Button Button4 = new Button();
        Button Button5 = new Button();
        Button Button6 = new Button();
        Button Button7 = new Button();
        Button Button8 = new Button();
        Button Button9 = new Button();
        Button Button10 = new Button();
        FlowLayoutPanel FlowLayoutPanel1 = new FlowLayoutPanel();

        private void InitializeComponent()
        {
            FlowLayoutPanel1.Location = new Point(454, 0);
            FlowLayoutPanel1.AutoSize = true;
            FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
            FlowLayoutPanel1.Name = "flowlayoutpanel";
            ClientSize = new System.Drawing.Size(614, 360);
            Controls.Add(this.FlowLayoutPanel1);
            Text = this.GetType().Name;
            AutoSize = true;
        }
        #endregion

        #region "set up DataGridView"

        private string thirdColumnHeader = "Main Ingredients";
        private string boringMeatloaf = "ground beef";
        private string boringMeatloafRanking = "*";
        private bool boringRecipe;
        private bool shortMode;

        private void InitializeDataGridView()
        {
            dataGridView = new System.Windows.Forms.DataGridView();
            Controls.Add(dataGridView);
            dataGridView.Size = new Size(300, 200);

            // Create an unbound DataGridView by declaring a
            // column count.
            dataGridView.ColumnCount = 4;
            AdjustDataGridViewSizing();

            // Set the column header style.
            DataGridViewCellStyle columnHeaderStyle =
                new DataGridViewCellStyle();
            columnHeaderStyle.BackColor = Color.Aqua;
            columnHeaderStyle.Font =
                new Font("Verdana", 10, FontStyle.Bold);
            dataGridView.ColumnHeadersDefaultCellStyle =
                columnHeaderStyle;

            // Set the column header names.
            dataGridView.Columns[0].Name = "Recipe";
            dataGridView.Columns[1].Name = "Category";
            dataGridView.Columns[2].Name = thirdColumnHeader;
            dataGridView.Columns[3].Name = "Rating";

            PostColumnCreation();

            // Populate the rows.
            string[] row1 = new string[]{"Meatloaf",
                                        "Main Dish", boringMeatloaf, boringMeatloafRanking};
            string[] row2 = new string[]{"Key Lime Pie",
                                        "Dessert", "lime juice, evaporated milk", "****"};
            string[] row3 = new string[]{"Orange-Salsa Pork Chops",
                                        "Main Dish", "pork chops, salsa, orange juice", "****"};
            string[] row4 = new string[]{"Black Bean and Rice Salad",
                                        "Salad", "black beans, brown rice", "****"};
            string[] row5 = new string[]{"Chocolate Cheesecake",
                                        "Dessert", "cream cheese", "***"};
            string[] row6 = new string[]{"Black Bean Dip", "Appetizer",
                                        "black beans, sour cream", "***"};
            object[] rows = new object[] { row1, row2, row3, row4, row5, row6 };

            foreach (string[] rowArray in rows)
            {
                dataGridView.Rows.Add(rowArray);
            }

            shortMode = false;
            boringRecipe = true;
        }

        private void AddButton(Button button, string buttonLabel,
            EventHandler handler)
        {
            FlowLayoutPanel1.Controls.Add(button);
            button.TabIndex = FlowLayoutPanel1.Controls.Count;
            button.Text = buttonLabel;
            button.AutoSize = true;
            button.Click += handler;
        }

        private void ResetToDisorder(object sender, System.EventArgs e)
        {
            Controls.Remove(dataGridView);
            dataGridView.Dispose();
            InitializeDataGridView();
        }

        private void ChangeColumn3Header(object sender,
            System.EventArgs e)
        {
            Toggle(ref shortMode);
            if (shortMode)
            { dataGridView.Columns[2].HeaderText = "S"; }
            else
            { dataGridView.Columns[2].HeaderText = thirdColumnHeader; }
        }

        private static void Toggle(ref bool toggleThis)
        {
            toggleThis = !toggleThis;
        }

        private void ChangeMeatloafRecipe(object sender,
            System.EventArgs e)
        {
            Toggle(ref boringRecipe);
            if (boringRecipe)
            {
                SetMeatloaf(boringMeatloaf, boringMeatloafRanking);
            }
            else
            {
                string greatMeatloafRecipe =
                    "1 lb. lean ground beef, " +
                    "1/2 cup bread crumbs, 1/4 cup ketchup," +
                    "1/3 tsp onion powder, " +
                    "1 clove of garlic, 1/2 pack onion soup mix " +
                    " dash of your favorite BBQ Sauce";
                SetMeatloaf(greatMeatloafRecipe, "***");
            }
        }

        private void SetMeatloaf(string recipe, string rating)
        {
            dataGridView.Rows[0].Cells[2].Value = recipe;
            dataGridView.Rows[0].Cells[3].Value = rating;
        }
        #endregion

        #region "demonstration code"
        private void PostColumnCreation()
        {
            AddContextLabel();
            AddCriteriaLabel();
            CustomizeCellsInThirdColumn();
            AddContextMenu();
            SetDefaultCellInFirstColumn();
            ToolTips();

            dataGridView.CellMouseEnter +=
                dataGridView_CellMouseEnter;
            dataGridView.AutoSizeColumnModeChanged +=
                dataGridView_AutoSizeColumnModeChanged;
        }

        private string criteriaLabel = "Column 3 sizing criteria: ";
        private void AddCriteriaLabel()
        {
            AddLabelToPanelIfNotAlreadyThere(criteriaLabel,
                criteriaLabel +
                dataGridView.Columns[2].AutoSizeMode.ToString() +
                ".");
        }

        private void AddContextLabel()
        {
            string labelName = "label";
            AddLabelToPanelIfNotAlreadyThere(labelName,
                "Use shortcut menu to change cell color.");
        }

        private void AddLabelToPanelIfNotAlreadyThere(
            string labelName, string labelText)
        {
            Label label;
            if (FlowLayoutPanel1.Controls[labelName] == null)
            {
                label = new Label();
                label.AutoSize = true;
                label.Name = labelName;
                label.BackColor = Color.Bisque;
                FlowLayoutPanel1.Controls.Add(label);
            }
            else
            {
                label = (Label)FlowLayoutPanel1.Controls[labelName];
            }
            label.Text = labelText;
        }

        private void CustomizeCellsInThirdColumn()
        {
            int thirdColumn = 2;
            DataGridViewColumn column = dataGridView.Columns[thirdColumn];
            DataGridViewCell cell = new DataGridViewTextBoxCell();

            cell.Style.BackColor = Color.Wheat;
            column.CellTemplate = cell;
        }

        ToolStripMenuItem toolStripItem1 = new ToolStripMenuItem();

        private void AddContextMenu()
        {
            toolStripItem1.Text = "Redden";
            toolStripItem1.Click += new EventHandler(toolStripItem1_Click);
            ContextMenuStrip strip = new ContextMenuStrip();
            foreach (DataGridViewColumn column in dataGridView.Columns)
            {

                column.ContextMenuStrip = strip;
                column.ContextMenuStrip.Items.Add(toolStripItem1);
            }
        }

        private DataGridViewCellEventArgs mouseLocation;

        // Change the cell's color.
        private void toolStripItem1_Click(object sender, EventArgs args)
        {
            dataGridView.Rows[mouseLocation.RowIndex]
                .Cells[mouseLocation.ColumnIndex].Style.BackColor
                = Color.Red;
        }

        // Deal with hovering over a cell.
        private void dataGridView_CellMouseEnter(object sender,
            DataGridViewCellEventArgs location)
        {
            mouseLocation = location;
        }

        private void SetDefaultCellInFirstColumn()
        {
            DataGridViewColumn firstColumn = dataGridView.Columns[0];
            DataGridViewCellStyle cellStyle =
                new DataGridViewCellStyle();
            cellStyle.BackColor = Color.Thistle;

            firstColumn.DefaultCellStyle = cellStyle;
        }

        private void ToolTips()
        {
            DataGridViewColumn firstColumn = dataGridView.Columns[0];
            DataGridViewColumn thirdColumn = dataGridView.Columns[2];
            firstColumn.ToolTipText =
                "This column uses a default cell.";
            thirdColumn.ToolTipText =
                "This column uses a template cell." +
                " Style changes to one cell apply to all cells.";
        }

        private void AddAdditionalButtons()
        {
            AddButton(Button4, "Set Minimum Width of Column Two",
                new EventHandler(Button4_Click));
            AddButton(Button5, "Set Width of Column One",
                new EventHandler(Button5_Click));
            AddButton(Button6, "Autosize Third Column",
                new EventHandler(Button6_Click));
            AddButton(Button7, "Add Thick Vertical Edge",
                new EventHandler(Button7_Click));
            AddButton(Button8, "Style and Number Columns",
                new EventHandler(Button8_Click));
            AddButton(Button9, "Change Column Header Text",
                new EventHandler(Button9_Click));
            AddButton(Button10, "Swap First and Last Columns",
                new EventHandler(Button10_Click));
        }

        private void AdjustDataGridViewSizing()
        {
            dataGridView.ColumnHeadersHeightSizeMode =
                DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        }

        //Set the minimum width.
        private void Button4_Click(object sender,
            System.EventArgs e)
        {
            DataGridViewColumn column = dataGridView.Columns[1];
            column.MinimumWidth = 40;
        }

        // Set the width.
        private void Button5_Click(object sender, System.EventArgs e)
        {
            DataGridViewColumn column = dataGridView.Columns[0];
            column.Width = 60;
        }

        // AutoSize the third column.
        private void Button6_Click(object sender,
            System.EventArgs e)
        {
            DataGridViewColumn column = dataGridView.Columns[2];
            column.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells;
        }

        // Set the vertical edge.
        private void Button7_Click(object sender,
            System.EventArgs e)
        {
            int thirdColumn = 2;
            DataGridViewColumn column =
                dataGridView.Columns[thirdColumn];
            column.DividerWidth = 10;
        }

        // Style and number columns.
        private void Button8_Click(object sender,
            EventArgs args)
        {
            DataGridViewCellStyle style = new DataGridViewCellStyle();
            style.Alignment =
                DataGridViewContentAlignment.MiddleCenter;
            style.ForeColor = Color.IndianRed;
            style.BackColor = Color.Ivory;

            foreach (DataGridViewColumn column in dataGridView.Columns)
            {
                column.HeaderCell.Value = column.Index.ToString();
                column.HeaderCell.Style = style;
            }
        }

        // Change the text in the column header.
        private void Button9_Click(object sender,
            EventArgs args)
        {
            foreach (DataGridViewColumn column in dataGridView.Columns)
            {

                column.HeaderText = String.Concat("Column ",
                    column.Index.ToString());
            }
        }

        // Swap the last column with the first.
        private void Button10_Click(object sender, EventArgs args)
        {
            DataGridViewColumnCollection columnCollection = dataGridView.Columns;

            DataGridViewColumn firstVisibleColumn =
                columnCollection.GetFirstColumn(DataGridViewElementStates.Visible);
            DataGridViewColumn lastVisibleColumn =
                columnCollection.GetLastColumn(
                    DataGridViewElementStates.Visible, DataGridViewElementStates.None);

            int firstColumn_sIndex = firstVisibleColumn.DisplayIndex;
            firstVisibleColumn.DisplayIndex = lastVisibleColumn.DisplayIndex;
            lastVisibleColumn.DisplayIndex = firstColumn_sIndex;
        }

        // Updated the criteria label.
        private void dataGridView_AutoSizeColumnModeChanged(object sender,
            DataGridViewAutoSizeColumnModeEventArgs args)
        {
            args.Column.DataGridView.Parent.
                Controls["flowlayoutpanel"].Controls[criteriaLabel].
                Text = criteriaLabel
                + args.Column.AutoSizeMode.ToString();
        }
        #endregion

        [STAThreadAttribute()]
        public static void Main()
        {
            Application.Run(new FormDataGridViewColumnDemo());
        }
    }
}