我的第一个SharePoint WebPart

本文是我的第一个WebPart开发过程，参考文档演练：为 SharePoint 创建 Web 部件。

1. 启动Visual Studio 2010，新建一SharePoint项目，项目模板选择SharePoint > 2010 > 空白SharePoint项目。确定项目名称和存放位置后点击“确定”按钮。

2. 指定用于调试的SharePoint网站和安全级别：注意：这里我们选择“部署为场解决方案”。点击“完成”按钮，项目创建成功。

3. 为新建的SharePoint项目添加新项，项目模版选择SharePoint > 2010 > Web部件。确定部件名称后点击“添加”按钮。

4. 打开新添加Web部件的代码文件（本文中是WebPart1.cs），用下面的代码替换。

using System;
using System.ComponentModel;
using System.Data;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;

namespace HelloWebPart.WebPart1
{
    [ToolboxItemAttribute(false)]
    public class WebPart1 : WebPart
    {
        private DataGrid grid;
        private static string verbText = "Show Managers Only";
        private Label errorMessage = new Label();
        protected string xmlFilePath;

        [Personalizable(PersonalizationScope.Shared), WebBrowsable(true),
        WebDisplayName("Path to Employee Data File"),
        WebDescription("Location of the XML file that contains employee data")]
        public string DataFilePath
        {
            get
            {
                return xmlFilePath;
            }
            set
            {
                xmlFilePath = value;
            }
        }

        protected override void CreateChildControls()
        {
            // Define the grid control that displays employee data in the Web Part.
            grid = new DataGrid();
            grid.Width = Unit.Percentage(100);
            grid.GridLines = GridLines.Horizontal;
            grid.HeaderStyle.CssClass = "ms-vh2";
            grid.CellPadding = 2;
            grid.BorderWidth = Unit.Pixel(5);
            grid.HeaderStyle.Font.Bold = true;
            grid.HeaderStyle.HorizontalAlign = HorizontalAlign.Center;

            // Populate the grid control with data in the employee data file.
            try
            {
                DataSet dataset = new DataSet();
                dataset.ReadXml(xmlFilePath, XmlReadMode.InferSchema);
                grid.DataSource = dataset;
                grid.DataBind();
            }
            catch (Exception x)
            {
                errorMessage.Text += x.Message;
            }

            // Add control to the controls collection of the Web Part.
            Controls.Add(grid);
            Controls.Add(errorMessage);
            base.CreateChildControls();
        }

        public override WebPartVerbCollection Verbs
        {
            get
            {
                WebPartVerb customVerb = new WebPartVerb("Manager_Filter_Verb",
                    new WebPartEventHandler(CustomVerbEventHandler));

                customVerb.Text = verbText;
                customVerb.Description = "Shows only employees that are managers";

                WebPartVerb[] newVerbs = new WebPartVerb[] { customVerb };

                return new WebPartVerbCollection(base.Verbs, newVerbs);
            }
        }

        protected void CustomVerbEventHandler(object sender, WebPartEventArgs args)
        {
            int titleColumn = 2;

            foreach (DataGridItem item in grid.Items)
            {
                if (item.Cells[titleColumn].Text != "Manager")
                {
                    if (item.Visible == true)
                    {
                        item.Visible = false;
                    }
                    else
                    {
                        item.Visible = true;
                    }
                }

            }
            if (verbText == "Show Managers Only")
            {
                verbText = "Show All Employees";
            }
            else
            {
                verbText = "Show Managers Only";
            }
        }
    }
}

5. 将下面的XML内容保存到一个文件，这里以C:\Shared Folders\Tutorials\HelloWebPart\HelloWebPart\data.xml为例。

<?xml version="1.0" encoding="utf-8" ?>
    <employees xmlns="http://schemas.microsoft.com/vsto/samples">
       <employee>
           <name>David Hamilton</name>
           <hireDate>2001-05-11</hireDate>
           <title>Sales Associate</title>
       </employee>
       <employee>
           <name>Karina Leal</name>
           <hireDate>1999-04-01</hireDate>
           <title>Manager</title>
       </employee>
       <employee>
           <name>Nancy Davolio</name>
           <hireDate>1992-05-01</hireDate>
           <title>Sales Associate</title>
       </employee>
       <employee>
           <name>Steven Buchanan</name>
           <hireDate>1955-03-04</hireDate>
           <title>Manager</title>
       </employee>
       <employee>
           <name>Suyama Michael</name>
           <hireDate>1963-07-02</hireDate>
           <title>Sales Associate</title>
       </employee>
    </employees>

6. 在 Visual Studio 中按“F5”，启动调试SharePoint项目，SharePoint 网站将自动打开。单击“网站操作”，然后单击“更多选项”，出现选择创建类型窗口。我们选择“Web部件页”类型，然后点击右边的“创建”按钮。

 

7. 在新建Web部件页页面，输入页面的名称，然后点击“创建”按钮。

 

8. Web部件页内容编辑页面被打开，见下图。

 

9. 点击页眉区域的“添加Web部件”链接，从“类别”列表中选择“Custom”，从“Web部件”列表中选择“WebPart1”（这里的名称就是我们在第3步添加的WebPart名称），然后点击“添加”按钮。

10. WebPart1部件被成功的添加到了页面，下图红框。

11. 点击WebPart1右上角的箭头，然后点击“编辑Web部件”。

12. Web部件属性窗格在右侧被打开。展开“杂项”节点，输入先前创建的 XML 文件的路径（C:\Shared Folders\Tutorials\HelloWebPart\HelloWebPart\data.xml），然后点击“确定”按钮。

13. XML文件的内容被成功的显示在了WebPart1部件里。

14. 点击WebPart1右上角的箭头，然后再点击“Show Manager Only”或“Show All Employees”，还可以实现显示数据范围的切换。