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• Vb Linq Examples
• Vb Linq Query
• 101 Linq Samples Vb
• Linq In Vb

I am learning LINQ Query, and I want to update one column value using LINQ Query, can someone please guide me, Below is what I have. Dim dtMytable As New Strongly_TypedTable dtMytable.Merge(Contact. So it means it will always create a new list with the update values. And source will still have same old values. Is it not possible to do something in linq simliar like. Writing a LINQ to DataTable that updates values. Data Platform Development > ADO.NET DataSet. Being a VB.NET developer, this is how I could code this situation without LINQ: For Each drTest As DataRow In mdtInspectionTests.Rows drTest(InspectionTest.Select) = False Next For Each drTemplateTest As DataRow In.

A DataSet in Asp.Net , represents an in-memory cache of data retrieved from a variety of data source, such as, SQL Server. We can also use the DataSet Class to read data from an XML file. Combining DataSet with the DataRow Class, we can easily update an XML file.

Here Mudassar Ahmed Khan has explained with an example, how to bind and populate ASP.Net DropDownList control using LINQ to SQL Framework (dbml classes) using C# and VB.Net. This article covers the basics of adding and generating dbml classes, connecting to database, adding Table entities and Stored Procedures. It will create new list which will replace old one, BTW the only LINQ here is where – wudzik Nov 12 '13 at 13:34 A new List, yes - but containing the same items, which will be updated correctly. This new list.

In this example, I am also using LINQ methods to retrieve each element in an XML file and display it on my web page.

What is this Example?

Using LINQ WHERE clause with DataTable in C# and VB.Net. The GetData function is called at two places, first inside the Page_Load event of the page and second inside the Country_Changed event handler which is triggered on the DropDownList SelectedIndexChanged event. Inside the Country_Changed event handler, first the selected value of the Country is fetched from the DropDownList. Download patch for angry birds star wars 2 game. Update (Edit) XML Data using DataSet and DataRow with LINQ in Asp.Net C# - Vb.Net. Update (Edit) XML Data using DataSet and DataRow with LINQ in Asp.Net C# - Vb.Net.

Vb Linq Examples

The XML file (see below) has many node’s. However, I wish to update the Price for each selected book. I’ll allow my users to change the price on my web page. The user will select a book from the <select> dropdown element and click the Show Details button. Once clicked, the click event at the code behind section will fetch misc details about the book from the XML file (matching the selected book), and show it.

The price will display in a textbox control, which will allow the user necessary changes and finally click another button to save the new price in file.

First, you will need some XML data. Here it is.

Create a file with the name library.xml and add the below data to it.

In the markup section, I have added an HTML5 <select> element with no values. 802.11n wireless lan card driver xp. I’ll add values to it dynamically, that is, through code behind procedure when the page loads. Along with it, I have 2 buttons to show and edit values to the XML file.

Vb Linq Query

Don’t get overwhelmed by the size of the code here. Simply focus on the save procedure at the end of the code. The remaining code using LINQ is to extract and display data on our web page.

101 Linq Samples Vb

Using the DataSet’s ReadXML() method, we’re actually pushing the data to the DataSet object. It creates a temporary table. Next, using the DataRow class, I am creating a row each for the selected XML element and at the same time assigning a new value to the price node.

Linq In Vb

Later, I am asking it to accept or commit the changes made.

Finally, using DataSet’s writeXml(), I am saving the changes in the file.

That’s it. Thanks for reading.

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