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SQL Server
Sunday, November 4, 2012PrintSubscribe
Minimal Membership Provider for SQL Server

Requirements

A minimal membership provider requires a dedicated table to keep track of user names and passwords.

This is a sample “Users” table with “identity” primary key.

A user table with "identity" primary key allows keeping tracking of user names and passwords

SQL:

create table Users
(
     UserID int not null identity primary key,
     UserName nvarchar(128) not null,
     "Password" nvarchar(128) not null
)

Here is how the table may look with a “unique identifier” primary key.

A user table with "unique identifier" primary key allows keeping tracking of user names and passwords

SQL:

create table Users
(
    UserID uniqueidentifier not null default newid() primary key,
    UserName nvarchar(128) not null,
    "Password" nvarchar(128) not null
)

User roles are hardcoded in the minimal Role Provider implementation.

Configuration

Create a table in your database using one of  the scripts specified above.

Select the project name on the start page of the application generator and choose Settings.

Proceed to Authentication and Membership.

Select “Enable custom membership and role providers” option and enter the following configuration settings.

table Users=Users
column [int|uiid] UserID = UserId
column [text] UserName = UserName
column [text] Password = Password

role Administrators = admin
role Users = admin, user
role Everybody = *

The configuration maps logical table Users required for membership provider implementation to the physical database table Users. It also defines three user roles – Administrators, Users, and Everybody.

Generate the project.

Thursday, October 18, 2012PrintSubscribe
Order Form Sample–Part 4

The Database Connection page is the first page you will see after creating a new project. This page allows you to specify your data provider and connection string. We will be using Microsoft SQL Server 2012. Select your data provider from the list, and press the “…” button to compose a connection string.

Button to activate the database connection string page.

A typical project will start with selection of an existing database. For this example, we will create a new one. Enter your server name, credentials, and enter “Northwind” in the Database field.

Property Value
Database Northwind

Press Create to the right of Database field, confirm the creation, and the database will be created.

Database with the name of 'Northwind' created on the specified server.

Under Sample Tables, select Northwind from the dropdown. Press Install, and confirm. This will install the Northwind sample database into the specified server.

Installing the Northwind sample into the specified database.

You can monitor the progress in the log at the bottom. The web app generator will notify you upon completion.

Monday, June 25, 2012PrintSubscribe
Format On Server

Format strings are used to format data before presentation to the end user. There are standard numeric and date/time format strings. In addition, custom date/time format strings can be created. The formatting is performed in the client web browser by default.

Microsoft.NET offers rich data formatting capabilities. Developers may request formatting of field values on the server to take advantage of everything it has to offer.

For example, the Unit Price field in the Order Details controller uses the standard currency format string of “c”. An application with en-US culture will format the number as a currency with a dollar sign on the left, period as a decimal separator, and parenthesis's to indicate negative values. The $0.00 indicates a zero value.

Unit Price field with default format string of 'c'.

Server-side formatting offers additional field value formatting options.

Start the Project Designer. In the Project Explorer, switch to the Controllers tab and double-click on Order Details / Fields / UnitPrice field node.

UnitPrice field of OrderDetails controller.

Change the following properties:

Property New Value
Data Format String 000,000.00;(000.00);Zero Value
Format On Client False

The data format string is a custom numeric format string. Positive, negative, and zero value strings are separated by a semicolon.

Press OK to save the field. On the toolbar, click on the Browse button to generate the web application.

Navigate to the Order Details page. The values in Unit Price field will be formatted according to the custom numerical format string. All eight digits will be displayed. Zero values will be represented with the text “Zero Value”.

Unit Price field using server-formatted custom numeric format string.

Notice that when the row is in edit mode, the values of fields formatted on the server will be displayed in raw form.

When the row is in edit mode, the values of fields formatted on the server will be displayed in raw form.

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