家有小虎 » SharePoint

SharePoint 2007 Maximum Limitations

@ouc — Wed, 07 Apr 2010 07:19:03 +0000

Entity	Max permissible size
Site Name	128 characters
Site URL	255 characters
Display name	128 characters
Connection string	384 characters
Email address	128 characters
Version numbers	064 characters
Virtual Server Friendly Name	064 characters
SQL Database Name	123 characters
SQL Database Column	128 characters
SQL Database Table Name	128 characters
SQL Role Name	128 characters
Server Name	128 characters
Windows User Name	300 characters
Windows Password	300 characters
Dependencies per object	032 objects
Zone enumeration value	004 zones
Default SQL command timeout	300 seconds
Number of simultaneous workflows that can be run	015 counts

From: http://goo.gl/iLTe

Handler the UnauthorizedAccessException in SharePoint

@ouc — Wed, 07 Apr 2010 06:16:53 +0000

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bool AccessDeniedflag = SPSecurity.CatchAccessDeniedException;
SPSecurity.CatchAccessDeniedException = false;
try
{
SPList list = web.GetList(web.ServerRelativeUrl+"/Lists/ListName");
SPListItem item = list.Items[0];
item["title"] = "ayman-elhattab.blogspot.com";
item.Update();
}
catch(UnauthorizedAccessException ex)
{
// Redirect to your custom page
SPUtility.Redirect("MyAccessDeniedPage.aspx",
SPRedirectFlags.RelativeToLayoutsPage,this.Context);
}
finally
{
SPSecurity.CatchAccessDeniedException = AccessDeniedflag;
}

The features of MOSS 2007

@ouc — Thu, 21 Jan 2010 12:50:34 +0000

Enterprise Portal

Web Form Web Part Use for Web Content of Type Display ( Web Form)

Web Report Web Part Use for Web Content of Type Output ( Report and Web Report)

Generic Web Part Use for Web Let

Web Menu Web Part Use for Web Menu on top and left

Box Menu Web Part Use for Web Menu on Activity Center Task List

Page Title Web Part Use for Page Title leveraging AX Label

Windows SharePoint Services

Content Editor Web Part	Use for formatted text, tables, and images.
Form Web Part	Use to connect simple form controls to other Web Parts.
Image Web Part	Use to display pictures and photos.
Members	Use the Members Web Part to see a list of the site members and their online status.
Page Viewer Web Part	Use to display linked content, such as files, folders, or Web pages. The linked content is isolated from other content on the Web Part Page.
Relevant Documents	Use this webpart to display documents that are relevant to the current user.
User Tasks	Use this webpart to display tasks that are assigned to the current user.
XML Web Part	Use for XML, and XSL Transformation of the XML.
List View Web Part

Microsoft SharePoint Server 2007

Business Data
Business Data Actions	Display a list of actions from the Business Data Catalog.
Business Data Item	Display one item from a data source in the Business Data Catalog.
Business Data Item Builder	Creates a Business Data item from parameters in the query string and provides it to other web parts. This web part is only used on Business Data profile pages.
Business Data List	Display a list of items from a data source in the Business Data Catalog.
Business Data Related List	Display a list of items related to one or more parent items from a data source in the Business Data Catalog.

Content Rollup
Colleague Tracker	Displays your list of colleagues and any recent changes they made have had.
Memberships	Displays your site and distribution list memberships.
My Links	Use to display your links
My SharePoint Sites	Use to display documents authored by you on sites where you are a member and sites of your choice.
My Workspaces	Displays sites created under your My Site.
Site Aggregator	Use to display sites of your choice.

Dashboard
Key Performance Indicators	Shows a list of status indicators. Status indicators display important measures for your organization, and show how your organization is performing with respect to your goals.
KPI Details	Displays the details of a single status indicator. Status indicators display an important measure for an organization and may be obtained from other data sources including SharePoint lists, Excel workbooks, and SQL Server 2005 Analysis Services KPIs.

Other
Excel Web Access	Use the Excel Web Access to interact with an Excel 2007 workbook as a Web page.
I need to…

SharePoint FREE Training site: http://goo.gl/driC

@ouc — Wed, 20 Jan 2010 10:20:08 +0000

Point8020 Learning Solutions from SharePoint: http://www.point8020.com/Training.aspx

Trying to report error to Sharepoint ToolPane

@ouc — Thu, 14 Jan 2010 12:11:50 +0000

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/// <summary>
/// A custom editor part for picking data fields for a table web part
/// </summary>
class CustomEditorPart:EditorPart
{
#region Declarations

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// In addition to other controls, etc, declare an error variable

string _errorText = string.Empty;

#endregion Declarations

#region Apply Changes

/// <summary>
/// Applies the changes to the web part properties
/// </summary>
/// <returns></returns>
public override bool ApplyChanges()
{
try
{

// You code goes here

return true;
}
catch (Exception ex)
{
_errorText = ex.Message;
return false;
}
}

#endregion Apply Changes

#region Rendering (Error Text)

/// <summary>
/// Update the error text if needed
/// </summary>
/// <param name="e"></param>
protected override void OnPreRender(EventArgs e)
{
if (_errorText != string.Empty)
{
this.Zone.ErrorText += Environment.NewLine + _errorText;
}

base.OnPreRender(e);
}

1 2	#endregion Rendering (Error Text) }

来源: http://goo.gl/IbOo

读取SharePoint的SMTP设置, 发送邮件

@ouc — Thu, 17 Sep 2009 02:19:39 +0000

private static String GetSmtpHost()
{
SPOutboundMailServiceInstance instance = SPContext.Current.Site.WebApplication.OutboundMailServiceInstance;

if (instance != null)
{
return instance.Server.Address;
}

instance = SPAdministrationWebApplication.Local.OutboundMailServiceInstance;

if (instance != null)
{
return instance.Server.Address;
}

return String.Empty;
}

SmtpClient smtpClient = new SmtpClient(smtpServer);
MailMessage mail = new MailMessage(FromEmail, ToEMail)
{
Subject = MailSubject,
Body =

“” + MailSubject + “”
+ “” + MailBody + “”,
IsBodyHtml = true
};

smtpClient.Send(mail);

判断是否一个SharePoint Publishing页处于编辑模式

@ouc — Wed, 16 Sep 2009 09:14:25 +0000

… 并且避免 ASP.NET 验证控件错误:

This page contains content or formatting that is not valid. You can find more information in the affected sections.

Input string was not in a correct format.

当创建一个WebPart来显示包含验证控件的表单时, ASP.NET 验证控件会阻止你签入和发布当前的Publishing页面.

解决方案:

Check if the web part is in edit or design mode and only add the validator if not:if (this.WebPartManager.DisplayMode != WebPartManager.EditDisplayMode &&
this.WebPartManager.DisplayMode != WebPartManager.DesignDisplayMode)
{
// in display mode
}

This solution applies only if you have a single web part on the page, because you can only check if the current web part is in display/edit/design mode.
Another solution is using the EditModePanel. It allows you to add contols to the page in display or edit mode.
For example:

// add the EditBox to the page in edit mode
EditModePanelpanel = newEditModePanel();
TextBoxtextBox = newTextBox();

panel.Controls.Add(textBox);
panel.PageDisplayMode = PageDisplayMode.Edit;
this.Controls.Add(panel);

This solution didn’t work. Some replection shows me that the panel uses this function (which is obfuscated): public staticSPControlModeGetContextualFormModeFromPostedForm()
This function comes from the internal class ConsoleUtilities.
The solution that worked for me was quite simple:
// check if the form is in display mode
bool inDisplayMode = SPContext.Current.FormContext.FormMode == SPControlMode.Display;

Well, good luck ;)

来源: http://blogs.microsoft.co.il/blogs/justguy/archive/2008/08/13/checking-if-a-publishing-page-is-in-edit-mode.aspx

How to get SharePoint 2007 SPList Forms Url

@ouc — Fri, 11 Sep 2009 08:31:32 +0000

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String formUrl = String.Format(CultureInfo.InvariantCulture, "{0}/{1}?id={2}",
SPContext.Current.Web.Url,
SPContext.Current.Web.Lists[ListName].Forms[ PAGETYPE.PAGE_DISPLAYFORM].Url, item.Id);

来源: http://www.myrocode.com/post/2009/03/20/How-get-SharePoint-2007-SpListItem-DispForm-Url.aspx

Export to Excel in SharePoint Application Page doesn’t work on second time

@ouc — Thu, 16 Jul 2009 02:49:20 +0000

The cause for this behavior is that there is a flag (named _spFormOnSubmitCalled) in SharePoint which prevents double form submition. This flag is set when the form is submitted and clear when the response is received.

However when exporting the response is redirected and the page is not updated, thus the flag is not cleared and page’s postbacks are blocked.

In order to workaround this behavior you should manually clear the flag when exporting. This can be achieve, for example in export button’s client click function similar to the following:

MyExportButton.OnClientClick = “_spFormOnSubmitCalled = false;”

Setting the _spFormOnSubmitCalled to false is actually what MS Ajax is doing when an ajax request is made thus I suspect there should be not implication using such approach.

About the removing spFormOnSubmitWrapper function call, you may instead set _spSuppressFormOnSubmitWrapper variable to true, which can be done conditionally only where needed by outputting similar to the following script:

_spBodyOnLoadFunctionNames.push(“supressSubmitWraper”);
function supressSubmitWraper()
{
_spSuppressFormOnSubmitWrapper = true;
}

来源: http://www.telerik.com/community/forums/aspnet-ajax/grid/export-to-excel-in-sharepoint-application-page.aspx

Some tips for MOSS or WSS developer

@ouc — Wed, 10 Jun 2009 05:50:36 +0000

Avoid empty catch blocks and use error logging instead.
Use the ‘as’ operator to cast reference types instead of a type cast. This saves you a NullReferenceException in case of an invalid cast.
Use the TryParse methods to convert strings to value types instead of the Convert class.
Everything placed in a 12-hive sub folder should have it’s custom folder (such as Application name) – except for the Xml folder.
Avoid Access Denied errors using the SPWeb.GetSubWebsForCurrentUser() instead of SPWeb.Webs property.
Use the SPSite.OpenWeb(string, bool) overload to open a site from user input or check the Url property of SPWeb after opening. Otherwise you cannot be sure that you have opened the correct site.
Use Uri and UriBuilder class to work with URL whenever possible.
Use SPUrlUtility to work with url’s. It has methods to combine urls and more.
Never use the SPList.GetItemById. This performs really badly on bigger lists. Either use a SPQuery or the cached methods of the PortalSiteMapProvider.
Check list existence prior to using it. Requires a foreach over the Web’s SPListCollection (remember to break when found). Consider to use the ListsForCurrentUser property.
Avoid duplicating logic… Create code libraries with general methods and classes, instead of having the same method/logic in multiple classes/projects.
Use try/catch statements when reading/writing from ressources, and handle them gracefully instead of throwing them to end users.
Use stringbuilder to concatenate strings.
Proper use of Dispose() on disposable sharepoint objects as SPWeb and SPSite.
Use the buildin functionality in Visual Studio to format documents (CTRL+K, CTRL+D)
When writing and reading to/from a SharePoint List, create a DAL for doing these operations.
Use variables (constants) and refer to these, when using strings in the code.