Updating data in asp net
From what I've seen your code is OK so double check all values as you step through it and pay close attention to the SQl statement.
As we'll see in this tutorial, these statements can be created manually or can be automatically generated by the Sql Data Source s Configure Data Source wizard. I am able to access the database and insert new customer but it doesn't work when i try to update any record. thank you so much this is all my code You have two if statements that check if the query string is empty or null but not one that checks if it isn't.Therefore, if the query string["ID"] is set to some value nothing will happen.Now, delete the Student data shown in the Message box “Student Data Delete Successfully”. If you have any other questions then please provide your comments below.In previous tutorials we learned how the Object Data Source control allowed for inserting, updating, and deleting of data.NET MVC 5 applications using the Entity Framework 6 Code First and Visual Studio 2013.
For information about the tutorial series, see the first tutorial in the series.
In the page, you can select a record, edit it, and then save it to the database. As with fetching a single record, the update requires that you set some parameters and then execute a statement (in this case, an Update statement).
When you are done, your page will look something like the following: The walkthrough will illustrate a number of concepts: To access the data, you will need a connection to the database you want to read from. However, because the Update statement does not return any records, the code for executing the statement is relatively simple.
The source may be: a hard-coded value like "3.95", which would return all products less than $3.95; the value of a Web control on the page, allowing the user to enter a price bound in a Text Box; from the querystring; from session state; and so on.
Likewise, the parameter values in the Astute readers will notice the similarity between the Access Data Source and Sql Data Source controls' inserting, deleting, and updating workflows.
These data modification capabilities can be plugged directly into a data source control without a line of code needing to be written.