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How get fetch information from database in C#?

by John A.

How get fetch information from database in C#?

Write code to retrieve data from SQL database in C# asp net

  1. Create an object of SqlConnection class.
  2. Prepare connection string for SqlConnection class object.
  3. Create object of SqlCommand class and prepare sql command with types, queries and sql connection object.
  4. Open sql connection.
  5. Execute sql query with cmd.

How do I query a DataSet in C#?

Querying a DataTable with LINQ

  1. DataSet ds = LoadDataSetUsingDataAdapter();
  2. DataTable orders = ds.Tables[“Orders”];DataTable orderDetails = ds.Tables[“OrderDetails”];
  3. var query = from o in orders.AsEnumerable()
  4. where o.Field < DateTime > (“OrderDate”).
  5. orderby o.Field < DateTime > (“OrderDate”) descending.
  6. select o;

How fetch data from database to TextBox in C#?

Solution 2

  1. Ensure your TextBox is MultiLine.
  2. Set up a connection to the database.
  3. Set up an SQL command to read the numbers.
  4. Clear the TextBox content.
  5. Read the data from the DataBase and add each line to the TextBox.

What is SQL DataSet in C#?

The DataSet contains the copy of the data we requested through the SQL statement. The DataSet is a memory-resident representation of data that provides a consistent relational programming model regardless of the data source. The C# SqlDataAdapter object allows us to populate Data Tables in a DataSet.

How show data from database in MVC?

Show Database Values in Table Using MVC Razor

  1. Create a table as in the following:
  2. Create a Stored Procedure as in the following:
  3. Create a project. Go to File, then New and click Project.
  4. Add the Entity model as in the following:
  5. Add a Controller as in the following:
  6. Add a View as in the following:
  7. Run the project.

How retrieve data from database in MVC 5 without Entity Framework?

Database connection without Entity Framework Choose the “web application” project and give an appropriate name to your project. Select “empty” template, check on MVC checkbox and click OK.

Can you query a DataSet?

After a DataSet object has been populated with data, you can begin querying it. You can use query expression syntax or method-based query syntax to perform queries against single tables in a DataSet, against multiple tables in a DataSet, or against tables in a typed DataSet.

How do you query a DataSet in SQL?

Basic SQL Server SELECT statement

  1. First, specify a list of comma-separated columns from which you want to query data in the SELECT clause.
  2. Second, specify the source table and its schema name on the FROM clause.

How can check data from database in asp net?

Searching Data From the Database in ASP.Net Web API

  1. First we create a table and insert some data into the table. Start SQL Server 2012.
  2. Now create a Web API application. Start Visual Studio 2012.
  3. Create a Model class.
  4. Open the “HomeController.
  5. Open the “index.
  6. Open the “Web.
  7. To execute the file press F5.

How can get textbox value from database in MVC?

  1. Open Visual Studio 2010. Click file ->New->Projects. Add MVC ASP.
  2. Right Click on the Models folder. Add->Add new items->add class. Class name is Employee.
  3. Right Click on the controllers folder. Add->controller. Controller name is “bhanu”.
  4. Right Click on the Action result object. Add view. View name is “Index”.

How do you convert a DataSet into a DataTable?

Convert DataSet to DataTable

  1. DataSet ds;
  2. DataTable dt= ds. Tables[0];

Why DataSet is used in C#?

It is used to hold multiple tables with data. You can select data form tables, create views based on table and ask child rows over relations. Also DataSet provides you with rich features like saving data as XML and loading XML data.