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DataPager Using MVVM in Silverlight 4

Posted By: Asim Sajjad     Posted Date: June 19, 2011    Points: 2   Category :Silverlight
In this short post I will show you how to use the DataPager control using MVVM pattern in silverlight. I have develop navigation application for this example which you can see as shown in the Image 1. Here you can see that I have two control in the home screen one is the DataGrid and the second one is the DataPager control.

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DataPager Silverlight Control for Beginners

It was a long time when I have post on silverlight data grid control, at that time I was thinking of posting complete series of the post on the data grid control I have posted on the data grid grouping control but I didn't post on the paging of the data grid records. Now after long time I have time to see the silverlight and its paging control, I know there are lot of tutorial regarding data pager control But I have this for the absolute beginner who are just started their journey of the Silverlight.
For this example I have two controls added in my xaml are one is the data grid control and the second one is the data pager control.
You can see the code for the data grid control and the data pager control in the List 1, Here you can see that I have set the properties of the data grid control like auto generate columns to false mean I will set the columns for the data grid control, IsReadOnly is set to false mean this grid is used for the display of data and the vertical and horizontal grid line brush and GridLinesVisibility is set to All to show both the horizontal and vertical lines.

Selecting One Checkbox Control In DataGrid Control Using MVVM Using Silverlight

In this post I will show you how to select single check-box control when you have single check-box control in each row of the datagrid control. As you all know that check-box controls are normally used for the multiple selection and radio buttons are used for single selection. But there are sometimes requirement that control should be check-box and selection should be single. Mean if user view data in the datagrid control then he/she should only select one check-box at a time not more then one. Main page is shown in the Image 1. Here you can see that I have placed check-box control in the first column of the datagrid control which I have also highlighted.

Get SelectedItems From DataGrid Using MVVM In Silverlight

In this post what I want to learn and to share something like how to get the selected items from the data grid control of the Silver light using MVVM. You can see the main output of the example code in the Image 1, here you can see that I have a data grid control and three button with label Add, edit and delete records. Let me explain you what is happening in the example code, user is allowed to select multiple record from the grid and the selected records Ids are displayed in the "Selected Ids" area. If user select only one record then add and edit buttons are enabled and if records are more then one then add and edit buttons are disabled. Similarly If number of selected item count is shown in the delete button text.

WPF: If Heineken did MVVM Frameworks Part 4

MVVM is to have an instance of a particular Model (say currentPerson) inside my ViewModel (say PeopleViewModel) which is exposed to the View (say PeopleView). The View binds and edits the Model directly.

This definitely flies in the face of what most people consider to be the holy grail of MVVM pattern, but it's a fairly new pattern, so people are still finding their way with it every day, and this works for me very well. The reason I do what I do, is for the following reasons:

1.I have always had the luxury of being able to write my own UI specific Model classes. I would even do this if I was using some other Model classes first, such as LINQ to SQL or LINQ to Entity Framework. As these classes don't have everything a proper WPF Model class needs in my humble opinion. Though, they are pretty good, as they are Partial classes and use INotifyPropertyChanged/DataContract etc etc
2.I am a pragmatist and I do not like writing code for the sake of writing code. I have seen some MVVM apps where the author has had a Model with 50 properties on it, that are simply repeated in the ViewModel abstraction, where the ViewModel added nothing. On that day I decided I would never do that unless I have to.
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Even if mobile dev is not my every day work, thanks to the .Net Compact Framework, it's still .Net programming.

Here is the scenario:

You come back home, you have a windows mobile phone wifi capable and you want to quickly get access to your phone pictures from your home network.
You just activate the Wifi, run my app and then browse to the provided link from any computer on the network.

GridView with DataPager in ASP.NET 3.5

To page through data in a control that implements the IPageableItemContainer interface, DataPager control can be used. GridView has its own paging and does not implement IPageableItemContainer interface. ListView is the only control that works with DataPager.

The DataPager control supports built-in paging user interface (UI). NumericPagerField object enables users to select a page of data by page number. NextPreviousPagerField object enables users to move through pages of data one page at a time, or to jump to the first or last page of data. The size of the pages of data is set by using the PageSize property of the DataPager control. One or more pager field objects can be used in a single DataPager control. Custom paging UI can be created by using the TemplatePagerField object. In the TemplatePagerField template, the DataPager control is referenced by using the Container property which provides access to the properties of the DataPager control. These properties include the starting row index, the page size, and the total number of rows currently bound to the control.

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This article, the first in a series of articles on the ListView and DataPager controls, looks at the ListView's many available templates and illustrates how to display data. Read on to learn more!

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Add tooltip to ASP.NET Datapager

Here is the sample code of javascript and data pager.

ASP.NET pager doesn't provide any direct support for adding tooltip to its different buttons . But there are some work arounds through which you can provide tooltips to ASP.NET data pager.

The structure of a simple data pager is as follows:


RenderDisabledButtonsAsLabels="true" ShowFirstPageButton="true" ShowPreviousPageButton="true"
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I have been spending quite a bit of time lately working with Silverlight 3 and SharePoint. One of the first big shifts for me is that Silverlight Development is Client development. Silverlight runs in the browser, but it runs on the client, so no SharePoint Object Model code. You have to access all of the goodness that is SharePoint through its web services.

WPF / Silverlight tutorial: Visibility property and binding

Visibility property is a very powerful and yet often overlooked property available in both WPF and Silverlight. It enables you to set Visibility of certain UIElement objects to different states like: Visible, Collapsed and Hidden (not supported by Silverlight). This tutorial shows you how to use it and how to bind to Visibility property


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Integrate Reporting Services with Silverlight and RIA Services

One of the most wanted future features in Silverlight is the possibility to create business reports using Reporting Services. In this article, I will show how to use the existing Reporting Services technology with Silverlight and RIA Services combination.

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