Added SqlDataSource control

[exyi]

Added SqlDataSource control, that loads data from SQL database right into GridView or Repeater. DataSource can be bound from any binding using _dataSource[... data source ID ...] special property.

    <dot:SqlDataSource ConnectionString="Data Source=(localdb)\ProjectsV13;Initial Catalog=test;" 
                       SelectCommand="select Table2.[FromEmail] as [From],
                                             Table2.[ToEmail] as [To],
                                             Table2.[Subject] as [Subject] from Table2 
                                      where Table2.[ToEmail] is not null" ID="Source1" />
    <p>Messages:</p>
    <dot:GridView DataSource="{value: _dataSource["Source1"]}">
        <dot:GridViewTextColumn ValueBinding="{value: _this["From"]}" HeaderText="Author" />
        <dot:GridViewTextColumn ValueBinding="{value: _this["Activity"]}" HeaderText="Author's Activity" />
        <dot:GridViewTextColumn ValueBinding="{value: _this["To"]}" HeaderText="Recipient" />
        <dot:GridViewTextColumn ValueBinding="{value: _this["Subject"]}" HeaderText="Subject" />
    </dot:GridView>

[exyi]

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