Windows 窗体模拟时钟集成到 Web 部件 Moss 2007

Question

我有一个 Windows 形式的模拟时钟，我需要创建一个 Web 部件（moss 2007）。

我的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security;
using System.Web;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.IO;
using System.Reflection;
using System.Drawing;

using Microsoft.SharePoint;
using Microsoft.SharePoint.WebPartPages;


namespace ClockWebPart 
{
    public class ClockWebPart : Microsoft.SharePoint.WebPartPages.WebPart
    {

        Form form = new Form();

        ///  Constructor
        public ClockWebPart()
        {
            InitializeComponent();
        }

        /// Initialization here
        private void ClockDesign_Load(object sender, EventArgs e)
        {
            try
            {
                // read the embeded resource
                Assembly asmImage = Assembly.GetExecutingAssembly();
                Stream streamImage = asmImage.GetManifestResourceStream("ClockWebPart.clock.bmp");
                Bitmap bmpBackground = new Bitmap(streamImage);
                SetFormBackgroundImage(bmpBackground);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Resource wasn't found!");
            }
        }


        /// <summary>
        ///  Set the form background
        /// </summary>
        /// <param name="bmpImage"></param>
        private void SetFormBackgroundImage(Bitmap bmpImage)
        {
            Color clrPixel = bmpImage.GetPixel(0, 0);
            bmpImage.MakeTransparent(clrPixel);
            form.BackgroundImage = bmpImage;
            // Set the form size from image size
            form.Size = bmpImage.Size;
        }

        /// Override the paint event
        //protected override void OnLoad(EventArgs e)
        //{
          //  base.OnLoad(e);
        //}


        protected void OnPreRender(System.Windows.Forms.PaintEventArgs e)
        {
            // Set the origin to center of the form
            e.Graphics.TranslateTransform(80.0F, 80.0F);

            // Save translated graphics state; So origin will remain at center of form when restore
            GraphicsState transState = e.Graphics.Save();

            // Capture a copy of current time for consistent
            DateTime dtNow = DateTime.Now;

            // rotation starts from new center of the form
            e.Graphics.RotateTransform(dtNow.Second * 6.0F - 90.0F);
            // Anti-alias only affect the next shape
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            // draw the second hand at new center of the form
            e.Graphics.FillRectangle(new SolidBrush(Color.Silver), -1, -1, 55, 2);

            //// Restore graphics state to translated state and fill second hand
            e.Graphics.Restore(transState);

            // minus 90 degree because start at x-axis
            e.Graphics.RotateTransform(dtNow.Minute * 6.0F - 90.0F);
            // Anti-alias only affect the next shape
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            e.Graphics.FillRectangle(new SolidBrush(Color.Silver), -1, -1, 45, 3);

            //// Restore graphics state to translated state and fill minute hand
            //gHands.Restore(transState);
            // Reset transformation matrix to identity and fill rectangle.
            e.Graphics.ResetTransform();
            // Set the origin to center of the form
            e.Graphics.TranslateTransform(80.0F, 80.0F);

            // minus 90 degree because start at x-axis; Minute affects hour hand too
            e.Graphics.RotateTransform(dtNow.Hour * 30.0F - 90.0F + dtNow.Minute * 0.5F);
            // Anti-alias only affect the next shape
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            e.Graphics.FillRectangle(new SolidBrush(Color.Silver), -1, -1, 35, 4);
        }


        /// Force the form to repaint for every tick

        private void tmrRotate_Tick(object sender, EventArgs e)
        {
            // Force to redraw
            //this.Invalidate();
            form.Refresh();
        }

        /// <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>


        #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();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(ClockWebPart));
            this.niMainMenu = new System.Windows.Forms.NotifyIcon(this.components);
            this.cmsAllMenu = new System.Windows.Forms.ContextMenuStrip(this.components);
            this.tsmiAbout = new System.Windows.Forms.ToolStripMenuItem();
            this.tsmiSeparator = new System.Windows.Forms.ToolStripSeparator();
            this.tsmiExit = new System.Windows.Forms.ToolStripMenuItem();
            this.tmrRotate = new System.Windows.Forms.Timer(this.components);
            this.cmsAllMenu.SuspendLayout();
            form.SuspendLayout();
            // 
            // niMainMenu
            // 
            this.niMainMenu.ContextMenuStrip = this.cmsAllMenu;
            this.niMainMenu.Icon = ((System.Drawing.Icon)(resources.GetObject("niMainMenu.Icon")));
            this.niMainMenu.Text = "Time flies!";
            this.niMainMenu.Visible = true;
            // 
            // cmsAllMenu
            // 
            this.cmsAllMenu.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.tsmiAbout,
            this.tsmiSeparator,
            this.tsmiExit});
            this.cmsAllMenu.Name = "cmsAllMenu";
            this.cmsAllMenu.Size = new System.Drawing.Size(108, 54);
            // 
            // tsmiAbout
            // 
            this.tsmiAbout.Name = "tsmiAbout";
            this.tsmiAbout.Size = new System.Drawing.Size(107, 22);
            this.tsmiAbout.Text = "About";
            //this.tsmiAbout.Click += new System.EventHandler(this.tsmiAbout_Click);
            // 
            // tsmiSeparator
            // 
            this.tsmiSeparator.Name = "tsmiSeparator";
            this.tsmiSeparator.Size = new System.Drawing.Size(104, 6);
            // 
            // tsmiExit
            // 
            this.tsmiExit.Name = "tsmiExit";
            this.tsmiExit.Size = new System.Drawing.Size(107, 22);
            this.tsmiExit.Text = "Exit";
            //this.tsmiExit.Click += new System.EventHandler(this.tsmiExit_Click);
            // 
            // tmrRotate
            // 
            this.tmrRotate.Enabled = true;
            this.tmrRotate.Interval = 1000;
            this.tmrRotate.Tick += new System.EventHandler(this.tmrRotate_Tick);
            // 
            // frmIrregular
            // 
            form.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            form.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            form.ClientSize = new System.Drawing.Size(160, 160);
            form.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            form.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
            form.Name = "frmIrregular";
            form.ShowInTaskbar = false;
            form.Text = "Time flies";
            form.TransparencyKey = System.Drawing.SystemColors.Control;
            form.Load += new System.EventHandler(this.ClockDesign_Load);
            //this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.frmIrregular_MouseDown);
            //this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.frmIrregular_MouseMove);
            this.cmsAllMenu.ResumeLayout(false);
            form.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.NotifyIcon niMainMenu;
        private System.Windows.Forms.ContextMenuStrip cmsAllMenu;
        private System.Windows.Forms.ToolStripMenuItem tsmiAbout;
        private System.Windows.Forms.ToolStripMenuItem tsmiExit;
        private System.Windows.Forms.ToolStripSeparator tsmiSeparator;
        private System.Windows.Forms.Timer tmrRotate;



    }
}

给出错误

Web 部件错误：发生错误。

有什么问题吗？

Answer 1

导致此错误的原因可能有很多。

using System.Linq;

MOS 2007 中肯定不支持。删除此行并进行测试。

还要禁用 web.config 中的自定义错误以显示完整错误。

Answer 2

这可能不会导致您的错误，但除非您需要，否则建议您的 Web 部件从 System.Web.UI.WebControls.WebParts.WebPart 继承，而不是 Microsoft.SharePoint.WebPartPages.WebPart。

有关更多详细信息，请参阅 WebPart 类。