Close the myRSManager application. in VS .NET

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14 Close the myRSManager application.
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Authenticating Users
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When you build a custom application, you can integrate with an existing security infrastructure and then pass credentials that are recognized by Reporting Services. The procedures that you have completed in this and the preceding two chapters pass the current user s credentials to Reporting Services. An ASP.NET application will run using its own account, but you can either override this and impersonate the current user or integrate your own authentication process. To impersonate the current user, add the following code to the Web.config file of your application: <identity impersonate="true />.
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Building Custom Reporting Tools CD-507
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In this procedure, you will create a Web application that uses integrated Windows security and impersonates the current user.
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Add identity impersonation to a Web application
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In Visual Studio, create a new project by using the ASP.NET Web Application template in the Visual Basic Projects folder. Assign the project to location http://localhost/myReportVB. Select Close Solution in the New Project dialog box to create a new solution for this project. Open Internet Information Services, expand nodes to reach the Default Web Site node, right-click the myReportVB virtual directory, and then click Properties.
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If you re using Windows Server 2003, you might need to create the virtual directory manually. To do this, right-click Default Web Site, point to New, and click Virtual Directory. Click Next to move through each page of the Virtual Directory Creation Wizard and type myReportVB in the Alias box and C:\Inetup\wwwroot\myReportVB in the Directory box. Keep the default Access Permissions Read and Run Scripts.
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Important
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Click the Directory Security tab of the myReportVB Properties dialog box, and then click the Edit button for Anonymous Access And Authentication Control. Clear the Anonymous Access check box (which is the Enable Anonymous Access check box on a Windows Server 2003 computer). The Authentication Methods dialog box looks like this:
Building Custom Reporting Tools
CD-508 Part 5
Programming Reporting Services
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Only the Integrated Windows Authentication check box should be selected. Click the OK button twice to close all dialog boxes, and then close the Internet Information Services window. In Solution Explorer, double-click the Web.config file, and then add the following code to the Authentication section of the file:
<identity impersonate="true" />
16 Building Custom Reporting Tools
G16PS12.eps
Your screen looks like this:
Now the application will authenticate using the current user s credentials rather than use the ASP.NET account.
Important
Be sure to use true instead of True because this value is casesensitive. Otherwise, you ll get an error when you try to run the application.
Save, and then close the Web.config file.
Now you re ready to add functionality to your Web application. In the next two sections, you learn how to retrieve report parameters for display in a Web Control and how to render a report as part of a Web application.
Using Report Parameters in a Control
As you learned earlier in this chapter, using a URL to access a report and specify its parameter values isn t secure. A user can easily manipulate the URL to alter
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Building Custom Reporting Tools CD-509
To create a parameter interface, you can bind report parameters to a control, such as a ListBox or a DropDownList, or a TextBox. You can retrieve the parameters by using the GetReportParameters() method. The syntax of this method is GetReportParameters(Report, ForRendering, HistoryID, ParameterValues(), Credentials()). The following arguments are required: Report Supply the full path of the report from which you want to retrieve parameter values. ForRendering Use true when you need to run a query to get the available values for any parameter in the report or when you want to get the parameters used to generate a report snapshot. Otherwise, use false if you want to retrieve the current values associated with each parameter. If a parameter is dependent on a query, the current value will be null. The following arguments are optional: HistoryID Use the ID of the report snapshot represented as a date/ time stamp string like 2004-06-23T2:23:00. ParameterValues() Create an array of ParameterValue objects if you want to validate them against the values defined in the report. Credentials() If you need to pass credentials for the data source used to generate the list of values for a parameter, use this argument. You need to pass an array of DataSourceCredentials objects which have the following properties: DataSourceName, UserName, Password. In this procedure, you will add an interface to the Web application that allows selection of report parameter values before rendering a report.
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