如何将插入的新行放入dataGridView的第一行

Question

{            
i++;
string[] row0 ={ i.ToString(),tLable.intoLable01,intoLable02};
DataGridViewRowCollection drow = this.dataGridView1.Rows;
drow.Add(row0);
}    使用DataGridViewRowCollection 加入新行,但是怎么才能把加入的新行排到DataGridView的第一行?使用排序可以吗?怎么才能设置按照那一行排序?

Answer 1

我用i排序!但是怎么才能使用DataGridView排序呢?这个请大大们指点!

Answer 2

change
drow.Add(row0);with 
drow.Insert(0,row0);

Answer 3

共有三种方法可以实现
1、以编程方式进行排序
具体为使用 SortOrder 和 SortedColumn 属性确定排序的方向，并使用 SortGlyphDirection 属性手动设置排序的标志符号。Sort 方法的 Sort(DataGridViewColumn,ListSortDirection) 重载仅用于在单列中对数据进行排序。using System;
using System.ComponentModel;
using System.Windows.Forms;class Form1 : Form
{
    private Button sortButton = new Button();
    private DataGridView dataGridView1 = new DataGridView();    // Initializes the form.
    // You can replace this code with designer-generated code.
    public Form1()
    {
        dataGridView1.Dock = DockStyle.Fill;
        dataGridView1.AllowUserToAddRows = false;
        dataGridView1.SelectionMode =
            DataGridViewSelectionMode.ColumnHeaderSelect;
        dataGridView1.MultiSelect = false;        sortButton.Dock = DockStyle.Bottom;
        sortButton.Text = "Sort";        Controls.Add(dataGridView1);
        Controls.Add(sortButton);
        Text = "DataGridView programmatic sort demo";
    }    // Establishes the main entry point for the application.
    [STAThreadAttribute()]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }    // Populates the DataGridView.
    // Replace this with your own code to populate the DataGridView.
    public void PopulateDataGridView()
    {
        // Add columns to the DataGridView.
        dataGridView1.ColumnCount = 2;
        dataGridView1.Columns[0].HeaderText = "Last Name";
        dataGridView1.Columns[1].HeaderText = "City";        // Populate the DataGridView.
        dataGridView1.Rows.Add(new string[] { "Parker", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "Watson", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "Osborn", "New York" });
        dataGridView1.Rows.Add(new string[] { "Jameson", "New York" });
        dataGridView1.Rows.Add(new string[] { "Brock", "New Jersey" });
    }    protected override void OnLoad(EventArgs e)
    {
        sortButton.Click += new EventHandler(sortButton_Click);        PopulateDataGridView();
        base.OnLoad(e);
    }    private void sortButton_Click(object sender, System.EventArgs e)
    {
        // Check which column is selected, otherwise set NewColumn to null.
        DataGridViewColumn newColumn =
            dataGridView1.Columns.GetColumnCount(
            DataGridViewElementStates.Selected) == 1 ?
            dataGridView1.SelectedColumns[0] : null;        DataGridViewColumn oldColumn = dataGridView1.SortedColumn;
        ListSortDirection direction;        // If oldColumn is null, then the DataGridView is not currently sorted.
        if (oldColumn != null)
        {
            // Sort the same column again, reversing the SortOrder.
            if (oldColumn == newColumn &&
                dataGridView1.SortOrder == SortOrder.Ascending)
            {
                direction = ListSortDirection.Descending;
            }
            else
            {
                // Sort a new column and remove the old SortGlyph.
                direction = ListSortDirection.Ascending;
                oldColumn.HeaderCell.SortGlyphDirection = SortOrder.None;
            }
        }
        else
        {
            direction = ListSortDirection.Ascending;
        }        // If no column has been selected, display an error dialog  box.
        if (newColumn == null)
        {
            MessageBox.Show("Select a single column and try again.",
                "Error: Invalid Selection", MessageBoxButtons.OK,
                MessageBoxIcon.Error);
        }
        else
        {
            dataGridView1.Sort(newColumn, direction);
            newColumn.HeaderCell.SortGlyphDirection =
                direction == ListSortDirection.Ascending ?
                SortOrder.Ascending : SortOrder.Descending;
        }
    }
}

Answer 4

2、使用 SortCompare 事件自定义排序
对选择的 DataGridViewColumn 进行排序，如果列中有重复值，则使用 ID 列确定最终顺序。#region Using directivesusing System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;#endregion
class Form1 : Form
{
    private DataGridView dataGridView1 = new DataGridView();    // Establish the main entry point for the application.
    [STAThreadAttribute()]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }    public Form1()
    {
        // Initialize the form.
        // This code can be replaced with designer generated code.
        dataGridView1.AllowUserToAddRows = false;
        dataGridView1.Dock = DockStyle.Fill;
        dataGridView1.SortCompare += new DataGridViewSortCompareEventHandler(
            this.dataGridView1_SortCompare);
        Controls.Add(this.dataGridView1);
        this.Text = "DataGridView.SortCompare demo";        PopulateDataGridView();
    }    // Replace this with your own population code.
    public void PopulateDataGridView()
    {
        // Add columns to the DataGridView.
        dataGridView1.ColumnCount = 3;        // Set the properties of the DataGridView columns.
        dataGridView1.Columns[0].Name = "ID";
        dataGridView1.Columns[1].Name = "Name";
        dataGridView1.Columns[2].Name = "City";
        dataGridView1.Columns["ID"].HeaderText = "ID";
        dataGridView1.Columns["Name"].HeaderText = "Name";
        dataGridView1.Columns["City"].HeaderText = "City";        // Add rows of data to the DataGridView.
        dataGridView1.Rows.Add(new string[] { "1", "Parker", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "2", "Parker", "New York" });
        dataGridView1.Rows.Add(new string[] { "3", "Watson", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "4", "Jameson", "New Jersey" });
        dataGridView1.Rows.Add(new string[] { "5", "Brock", "New York" });
        dataGridView1.Rows.Add(new string[] { "6", "Conner", "Portland" });        // Autosize the columns.
        dataGridView1.AutoResizeColumns();
    }    private void dataGridView1_SortCompare(object sender,
        DataGridViewSortCompareEventArgs e)
    {
        // Try to sort based on the cells in the current column.
        e.SortResult = System.String.Compare(
            e.CellValue1.ToString(), e.CellValue2.ToString());        // If the cells are equal, sort based on the ID column.
        if (e.SortResult == 0 && e.Column.Name != "ID")
        {
            e.SortResult = System.String.Compare(
                dataGridView1.Rows[e.RowIndex1].Cells["ID"].Value.ToString(),
                dataGridView1.Rows[e.RowIndex2].Cells["ID"].Value.ToString());
        }
        e.Handled = true;
    }
}

Answer 5

3、使用 IComparer 接口自定义排序
使用 Sort 方法的 Sort(IComparer) 重载自定义排序，该重载采用 IComparer 接口的实现来执行多列排序。#region Using directivesusing System;
using System.Drawing;
using System.Windows.Forms;#endregionclass Form1 : Form
{
    private DataGridView DataGridView1 = new DataGridView();
    private FlowLayoutPanel FlowLayoutPanel1 = new FlowLayoutPanel();
    private Button Button1 = new Button();
    private RadioButton RadioButton1 = new RadioButton();
    private RadioButton RadioButton2 = new RadioButton();    // Establish the main entry point for the application.
    [STAThreadAttribute()]
    public static void Main()
    {
        Application.Run(new Form1());
    }    public Form1()
    {
        // Initialize the form.
        // This code can be replaced with designer generated code.
        AutoSize = true;
        Text = "DataGridView IComparer sort demo";        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
        FlowLayoutPanel1.Location = new System.Drawing.Point( 304, 0 );
        FlowLayoutPanel1.AutoSize = true;        FlowLayoutPanel1.Controls.Add( RadioButton1 );
        FlowLayoutPanel1.Controls.Add( RadioButton2 );
        FlowLayoutPanel1.Controls.Add( Button1 );        Button1.Text = "Sort";
        RadioButton1.Text = "Ascending";
        RadioButton2.Text = "Descending";
        RadioButton1.Checked = true;        Controls.Add( FlowLayoutPanel1 );
        Controls.Add( DataGridView1 );
    }    protected override void OnLoad( EventArgs e )
    {
        PopulateDataGridView();
        Button1.Click += new EventHandler(Button1_Click);        base.OnLoad( e );
    }    // Replace this with your own code to populate the DataGridView.
    private void PopulateDataGridView()
    {        DataGridView1.Size = new Size(300, 300);        // Add columns to the DataGridView.
        DataGridView1.ColumnCount = 2;        // Set the properties of the DataGridView columns.
        DataGridView1.Columns[0].Name = "First";
        DataGridView1.Columns[1].Name = "Last";
        DataGridView1.Columns["First"].HeaderText = "First Name";
        DataGridView1.Columns["Last"].HeaderText = "Last Name";
        DataGridView1.Columns["First"].SortMode = 
            DataGridViewColumnSortMode.Programmatic;
        DataGridView1.Columns["Last"].SortMode = 
            DataGridViewColumnSortMode.Programmatic;        // Add rows of data to the DataGridView.
        DataGridView1.Rows.Add(new string[] { "Peter", "Parker" });
        DataGridView1.Rows.Add(new string[] { "James", "Jameson" });
        DataGridView1.Rows.Add(new string[] { "May", "Parker" });
        DataGridView1.Rows.Add(new string[] { "Mary", "Watson" });
        DataGridView1.Rows.Add(new string[] { "Eddie", "Brock" });
    }    private void Button1_Click( object sender, EventArgs e )
    {
        if ( RadioButton1.Checked == true )
        {
            DataGridView1.Sort( new RowComparer( SortOrder.Ascending ) );
        }
        else if ( RadioButton2.Checked == true )
        {
            DataGridView1.Sort( new RowComparer( SortOrder.Descending ) );
        }
    }    private class RowComparer : System.Collections.IComparer
    {
        private static int sortOrderModifier = 1;        public RowComparer(SortOrder sortOrder)
        {
            if (sortOrder == SortOrder.Descending)
            {
                sortOrderModifier = -1;
            }
            else if (sortOrder == SortOrder.Ascending)
            {
                sortOrderModifier = 1;
            }
        }        public int Compare(object x, object y)
        {
            DataGridViewRow DataGridViewRow1 = (DataGridViewRow)x;
            DataGridViewRow DataGridViewRow2 = (DataGridViewRow)y;            // Try to sort based on the Last Name column.
            int CompareResult = System.String.Compare(
                DataGridViewRow1.Cells[1].Value.ToString(),
                DataGridViewRow2.Cells[1].Value.ToString());            // If the Last Names are equal, sort based on the First Name.
            if ( CompareResult == 0 )
            {
                CompareResult = System.String.Compare(
                    DataGridViewRow1.Cells[0].Value.ToString(),
                    DataGridViewRow2.Cells[0].Value.ToString());
            }
            return CompareResult * sortOrderModifier;
        }
    }
}

Answer 6

大大这些是MSDN上的!!不过看的有点迷糊!!我想问一下如何通过DataGridView自带的排序功能设置排序,就象手动点击DataGridView的Column一样,就能排序.我想能否通过设置,在插入后设置DataGridView排序一次,那么就有把新插入的行放入第一行的功能了?

Answer 7

Knight94(愚翁) 谢谢!!还是大大厉害呀!!这么简单就解决问题!!谢谢!也谢谢帮忙指点小弟的个位大大们!!