C#简单的日志打印控件

partial class DataGridViewInfo
{
    /// <summary> 
    /// 必需的设计器变量。
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary> 
    /// 清理所有正在使用的资源。
    /// </summary>
    /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region 组件设计器生成的代码

    /// <summary> 
    /// 设计器支持所需的方法 - 不要修改
    /// 使用代码编辑器修改此方法的内容。
    /// </summary>
    private void InitializeComponent()
    {
        System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle1 = new System.Windows.Forms.DataGridViewCellStyle();
        this.dataGridView1 = new System.Windows.Forms.DataGridView();
        this.Column1 = new System.Windows.Forms.DataGridViewTextBoxColumn();
        ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
        this.SuspendLayout();
        // 
        // dataGridView1
        // 
        this.dataGridView1.AllowUserToAddRows = false;
        this.dataGridView1.AllowUserToDeleteRows = false;
        this.dataGridView1.AllowUserToResizeColumns = false;
        this.dataGridView1.AllowUserToResizeRows = false;
        this.dataGridView1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.AllCells;
        this.dataGridView1.BackgroundColor = System.Drawing.Color.Black;
        this.dataGridView1.CellBorderStyle = System.Windows.Forms.DataGridViewCellBorderStyle.None;
        this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        this.dataGridView1.ColumnHeadersVisible = false;
        this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
        this.Column1});
        dataGridViewCellStyle1.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleLeft;
        dataGridViewCellStyle1.BackColor = System.Drawing.Color.Black;
        dataGridViewCellStyle1.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
        dataGridViewCellStyle1.ForeColor = System.Drawing.SystemColors.ControlText;
        dataGridViewCellStyle1.SelectionBackColor = System.Drawing.SystemColors.Highlight;
        dataGridViewCellStyle1.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
        dataGridViewCellStyle1.WrapMode = System.Windows.Forms.DataGridViewTriState.False;
        this.dataGridView1.DefaultCellStyle = dataGridViewCellStyle1;
        this.dataGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
        this.dataGridView1.GridColor = System.Drawing.Color.Black;
        this.dataGridView1.Location = new System.Drawing.Point(0, 0);
        this.dataGridView1.MultiSelect = false;
        this.dataGridView1.Name = "dataGridView1";
        this.dataGridView1.ReadOnly = true;
        this.dataGridView1.RowHeadersVisible = false;
        this.dataGridView1.RowTemplate.Height = 100;
        this.dataGridView1.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
        this.dataGridView1.Size = new System.Drawing.Size(250, 160);
        this.dataGridView1.TabIndex = 4;
        // 
        // Column1
        // 
        this.Column1.HeaderText = "Column1";
        this.Column1.Name = "Column1";
        this.Column1.ReadOnly = true;
        this.Column1.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.NotSortable;
        this.Column1.Width = 5;
        // 
        // DataGridViewInfo
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.BackColor = System.Drawing.Color.Black;
        this.Controls.Add(this.dataGridView1);
        this.Name = "DataGridViewInfo";
        this.Size = new System.Drawing.Size(250, 160);
        this.Load += new System.EventHandler(this.DataGridViewInfo_Load);
        ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
        this.ResumeLayout(false);

    }

    #endregion

    private System.Windows.Forms.DataGridView dataGridView1;
    private System.Windows.Forms.DataGridViewTextBoxColumn Column1;
}

public partial class DataGridViewInfo : UserControl
{
    public DataGridViewInfo()
    {
        InitializeComponent();
        this.BackColorChanged += DataGridViewInfo_BackColorChanged;
        this.FontChanged += DataGridViewInfo_FontChanged;
    }

    private void DataGridViewInfo_FontChanged(object sender, EventArgs e)
    {
        this.dataGridView1.DefaultCellStyle.Font = this.Font;
    }

    private void DataGridViewInfo_BackColorChanged(object sender, EventArgs e)
    {
        this.dataGridView1.BackgroundColor = this.BackColor;
        this.dataGridView1.DefaultCellStyle.BackColor = this.BackColor;
    }

    int _maxRowCount = 5000;
    [Description("显示的最大行数"), Category("自定义属性")]
    public int MaxRowCount
    {
        get
        {
            return _maxRowCount;
        }

        set
        {
            _maxRowCount = value;
        }
    }

    [Description("选择一行时的背景颜色"), Category("自定义属性")]
    public Color SelectBackColor
    {
        get
        {
            return this.dataGridView1.DefaultCellStyle.SelectionBackColor;
        }
        set
        {
            this.dataGridView1.DefaultCellStyle.SelectionBackColor = value;
        }
    }

    [Description("行高度"), Category("自定义属性")]
    public int RowHeight
    {
        get
        {
            return _rowHeight;
        }

        set
        {
            _rowHeight = value;
            this.dataGridView1.RowTemplate.Height = _rowHeight;
        }
    }

    int _rowHeight = 25;

    /// <summary>
    /// 向信息显示栏添加一行
    /// </summary>
    /// <param name="text">添加的信息</param>
    /// <param name="color">信息的前景色</param>
    public void WriteLine(string text, Color color)
    {
        while (this.dataGridView1.Rows.Count > MaxRowCount)
        {
            this.dataGridView1.Rows.RemoveAt(0);
        }
        int index = this.dataGridView1.Rows.Add(1);
        DataGridViewCell cell = this.dataGridView1.Rows[index].Cells[0];
        cell.Style.ForeColor = color;
        cell.Value = text;
        this.dataGridView1.CurrentCell = cell;
        this.dataGridView1.ClearSelection();
    }


    [Description("新添加一行时发生"), Category("自定义事件")]
    public event DataGridViewRowsAddedEventHandler RowsAddedEvent;

    private void DataGridViewInfo_Load(object sender, EventArgs e)
    {
        this.dataGridView1.RowsAdded += RowsAddedEvent;
    }

}