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Posted by / 05-Dec-2019 00:35

Asp updating database from dropdown box

You can add your custom name column names along with data type.

(Data Type : For string data choose - varchar(50) or above, for integer data choose - int) Step 3 Adding connection string to web.config file.

We will not get into more detailed explanation about the database but just a breif for undertsanding.

Database is a collection of data stored in a computer disc space or server space.

Find the web.config file open that web.config file. Then Drag and drop a gridview to the page from the tool box then do the following as shown in below. Add - Edit Delete buttons from the command field and check on the auto generate fields.

Replace the above connection string with your copied connection string. Edit link is for to choose which record to edit and delete link is for to delete the selected record.

We have shown you an example through visual studio 2010.

Delete statement helps to delete one or more records from the database table depending on condition. Example "Where student ID = 1 " - It is a condition, means delete student record whose ID number is = 1.

When we have a website or an application associated with database (Sql, Oracle, Mysql and so on) then to do manipulation (i.e.

Displaying, Deletion, Updating and Insertion) in the database we have to use only DML Language statements (i.e. Now that you have understoond about data manipulation language, now let's do step by step insert, update, delete and select using c# code with objects.

To demonstrate step by step insert update delete and select, we will be using a simple web application, you can choose anything web or windows depending on your requirement the coding part will remain the same.

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It's like a school with many classrooms and each classroom will have different school students.