亚洲免费在线-亚洲免费在线播放-亚洲免费在线观看-亚洲免费在线观看视频-亚洲免费在线看-亚洲免费在线视频

How to: Update List Items

系統 1783 0
SharePoint 2010
0 out of 20 rated this helpful? Rate this topic
?

Published: May 2010

This programming task shows how to use the? UpdateListItems ?method of the? Lists ?Web service to update items in a list through a Microsoft Windows Forms application.

Use an? XmlElement ?object to create a? Batch ?element in? Collaborative Application Markup Language (CAML) ?that can contain multiple? Method ?elements, and use the? UpdateListItems(String, XmlNode) ?method to post the methods and update items.

Note

The number of list items that you can modify through the? UpdateListItems ?method in a single batch is limited to 160.

The? Cmd ?attribute of each? Method ?element determines the operation that is performed on an item by specifying one of the following values:

  • Delete ?-- Delete an item.

  • New ?-- Create an item.

  • Update ?-- Modify an item.

  • Move ?-- Move an item.

Before you begin, create a Windows Forms application in Microsoft Visual Studio. For information about setting a Web reference to a SharePoint Foundation Web service, see? Web Service Guidelines .

To add code to update list items

  1. Open? Form1 ?in Design view, open the? Toolbox , and then drag a? Button ?control onto the form.

  2. Double-click the? Button ?control to display the? Code Editor , and then add the following lines of code to the Button1_Click ?event handler.

    ?
                              
                                'Declare and initialize a variable for the Lists Web service.
                              
                              
                                Dim
                              
                               listService 
                              
                                As
                              
                              
                                New
                              
                               sitesWebServiceLists.Lists()
    
    
    
    
                              
                                'Authenticate the current user by passing their default
                              
                              
                                'credentials to the Web service from the system credential cache.
                              
                              
    
    listService.Credentials = System.Net.CredentialCache.DefaultCredentials
    
    
    
    
                              
                                'Set the Url property of the service for the path to a subsite.
                              
                              
    
    listService.Url = 
                              
                                "http://MyServer/sites/MySiteCollection/_vti_bin/Lists.asmx"
                              
                              
                                'Get Name attribute values (GUIDs) for list and view. 
                              
                              
                                Dim
                              
                               ndListView 
                              
                                As
                              
                               System.Xml.XmlNode = listService.GetListAndView(
                              
                                "MyList"
                              
                              , 
                              
                                ""
                              
                              )
    
    
                              
                                Dim
                              
                               strListID 
                              
                                As
                              
                              
                                String
                              
                               = ndListView.ChildNodes(0).Attributes(
                              
                                "Name"
                              
                              ).Value
    
    
                              
                                Dim
                              
                               strViewID 
                              
                                As
                              
                              
                                String
                              
                               = ndListView.ChildNodes(1).Attributes(
                              
                                "Name"
                              
                              ).Value
    
    
    
    
                              
                                'Create an XmlDocument object and construct a Batch element and its 
                              
                              
                                'attributes. Note that an empty ViewName parameter causes the method 
                              
                              
                                'to use the default view. 
                              
                              
                                Dim
                              
                               doc 
                              
                                As
                              
                              
                                New
                              
                               System.Xml.XmlDocument()
    
    
                              
                                Dim
                              
                               batchElement 
                              
                                As
                              
                               System.Xml.XmlElement = doc.CreateElement(
                              
                                "Batch"
                              
                              )
    
    batchElement.SetAttribute(
                              
                                "OnError"
                              
                              , 
                              
                                "Continue"
                              
                              )
    
    batchElement.SetAttribute(
                              
                                "ListVersion"
                              
                              , 
                              
                                "1"
                              
                              )
    
    batchElement.SetAttribute(
                              
                                "ViewName"
                              
                              , strViewID)
    
    
    
    
                              
                                'Specify methods for the batch post using CAML. To update or delete, 
                              
                              
                                'specify the ID of the item, and to update or add, specify 
                              
                              
                                'the value to place in the specified columns.
                              
                              
    
    batchElement.InnerXml = 
                              
                                "<Method ID='1' Cmd='Update'>"
                              
                               +
    
       
                              
                                "<Field Name='ID'>6</Field>"
                              
                               +
    
       
                              
                                "<Field Name='Title'>Modified sixth item</Field></Method>"
                              
                               +
    
       
                              
                                "<Method ID='2' Cmd='Update'><Field Name='ID'>7</Field>"
                              
                               +
    
       
                              
                                "<Field Name='Title'>Modified seventh item</Field></Method>"
                              
                               +
    
       
                              
                                "<Method ID='3' Cmd='Delete'><Field Name='ID'>5</Field>"
                              
                               +
    
       
                              
                                "</Method><Method ID='4' Cmd='New'>"
                              
                               +
    
       
                              
                                "<Field Name='Title'>Added item</Field></Method>"
                              
                              
                                'Update list items. This example uses the list GUID, 
                              
                              
                                'which is recommended, but the list display name will also work.
                              
                              
    
    listService.UpdateListItems(strListID, batchElement)
    
    
                            

    ?

    ?
                              
                                /*Declare and initialize a variable for the Lists Web service.*/
                              
                              
    
    sitesWebServiceLists.Lists listService = 
                              
                                new
                              
                               sitesWebServiceLists.Lists();
    
    
    
    
                              
                                /*Authenticate the current user by passing their default
    
    credentials to the Web service from the system credential cache.*/
                              
                              
    
    listService.Credentials =
    
    System.Net.CredentialCache.DefaultCredentials;
    
    
    
    
                              
                                /*Set the Url property of the service for the path to a subsite.*/
                              
                              
    
    listService.Url = 
                              
                                "http://MyServer/sites/MySiteCollection/_vti_bin/Lists.asmx"
                              
                              ;
    
    
    
    
                              
                                /*Get Name attribute values (GUIDs) for list and view. */
                              
                              
    
    System.Xml.XmlNode ndListView = listService.GetListAndView(
                              
                                "MyList"
                              
                              , 
                              
                                ""
                              
                              );
    
    
                              
                                string
                              
                               strListID = ndListView.ChildNodes[0].Attributes[
                              
                                "Name"
                              
                              ].Value;
    
    
                              
                                string
                              
                               strViewID = ndListView.ChildNodes[1].Attributes[
                              
                                "Name"
                              
                              ].Value;
    
    
    
    
                              
                                /*Create an XmlDocument object and construct a Batch element and its
    
    attributes. Note that an empty ViewName parameter causes the method to use the default view. */
                              
                              
    
    System.Xml.XmlDocument doc = 
                              
                                new
                              
                               System.Xml.XmlDocument();
    
    System.Xml.XmlElement batchElement = doc.CreateElement(
                              
                                "Batch"
                              
                              );
    
    batchElement.SetAttribute(
                              
                                "OnError"
                              
                              , 
                              
                                "Continue"
                              
                              );
    
    batchElement.SetAttribute(
                              
                                "ListVersion"
                              
                              , 
                              
                                "1"
                              
                              );
    
    batchElement.SetAttribute(
                              
                                "ViewName"
                              
                              , strViewID);
    
    
    
    
                              
                                /*Specify methods for the batch post using CAML. To update or delete, 
    
    specify the ID of the item, and to update or add, specify 
    
    the value to place in the specified column.*/
                              
                              
    
    batchElement.InnerXml = 
                              
                                "<Method ID='1' Cmd='Update'>"
                              
                               +
    
       
                              
                                "<Field Name='ID'>6</Field>"
                              
                               +
    
       
                              
                                "<Field Name='Title'>Modified sixth item</Field></Method>"
                              
                               +
    
       
                              
                                "<Method ID='2' Cmd='Update'><Field Name='ID'>7</Field>"
                              
                               +
    
       
                              
                                "<Field Name='Title'>Modified seventh item</Field></Method>"
                              
                               +
    
       
                              
                                "<Method ID='3' Cmd='Delete'><Field Name='ID'>5</Field>"
                              
                               +
    
       
                              
                                "</Method><Method ID='4' Cmd='New'>"
                              
                               +
    
       
                              
                                "<Field Name='Title'>Added item</Field></Method>"
                              
                              ;
    
    
    
    
                              
                                /*Update list items. This example uses the list GUID, which is recommended, 
    
    but the list display name will also work.*/
                              
                              
                                try
                              
                              
    
    {
    
       listService.UpdateListItems(strListID, batchElement);
    
    }
    
    
                              
                                catch
                              
                               (SoapServerException ex)
    
    {
    
       MessageBox.Show(ex.Message);
    
    }
    
    
                            
    Note

    Posting the? UpdateListItems ?method silently fails if a specified item does not exist. The identifier (ID) for a deleted item is maintained after a delete operation. Consequently, the example deletes the fifth item in the list, but number 5 is not reassigned as the ID for another item.

  3. On the? Debug ?menu, click? Start Debugging , or press? F5 , to test the form.

    ?

    http://msdn.microsoft.com/en-us/library/ms440289.aspx

How to: Update List Items


更多文章、技術交流、商務合作、聯系博主

微信掃碼或搜索:z360901061

微信掃一掃加我為好友

QQ號聯系: 360901061

您的支持是博主寫作最大的動力,如果您喜歡我的文章,感覺我的文章對您有幫助,請用微信掃描下面二維碼支持博主2元、5元、10元、20元等您想捐的金額吧,狠狠點擊下面給點支持吧,站長非常感激您!手機微信長按不能支付解決辦法:請將微信支付二維碼保存到相冊,切換到微信,然后點擊微信右上角掃一掃功能,選擇支付二維碼完成支付。

【本文對您有幫助就好】

您的支持是博主寫作最大的動力,如果您喜歡我的文章,感覺我的文章對您有幫助,請用微信掃描上面二維碼支持博主2元、5元、10元、自定義金額等您想捐的金額吧,站長會非常 感謝您的哦!!!

發表我的評論
最新評論 總共0條評論
主站蜘蛛池模板: 在线观看国产一区二三区 | 亚洲国产日本 | 成人18网址在线观看 | 九九热免费观看 | 狠狠久久久久久亚洲综合网 | 日日夜操 | 国产亚洲女在线精品 | 欧美国产日韩911在线观看 | 日韩精品成人免费观看 | 内衣办公室动漫久久影院 | 狠狠狠狠狠狠狠狠 | 日本高清免费不卡毛片 | 欧美在线日韩在线 | 精品一区二区三区免费视频 | 99热这里只有精品9 99热这里只有精品99 | 欧美 亚洲 另类 热图 | 亚洲综合网在线观看 | 久久综合爱 | 曰本毛片 | 日韩欧美国产一区二区三区四区 | 离线枕边人国语在线影视 | 久久毛片免费 | 久久国产精品99久久久久久牛牛 | 国产一区二区精品久久 | 91福利一区二区在线观看 | 一本到视频在线观看 | ass最极品女人下部pic | 国产成人不卡 | 久久欧美精品欧美九久欧美 | 国产三级久久久精品麻豆三级 | 国产成人亚综合91精品首页 | 欧洲亚洲视频 | 免费网站成人亚洲 | 99热久久精品首页 | 四虎在线永久免费视频网站 | 一区二区三区不卡在线 | 黄色在线免费观看网站 | 国产精品亚洲综合第一区 | 同性女女黄h片在线播放 | 亚洲综合精品 | 亚洲国产精品综合久久网络 |