Note: This program will work only on Internet Explorer.
In this article I will explain how to delete a record from a database using a TextBox in TypeScript.
First I created a database "EmpDetail". Then I created a table in this database.
Query Code
CREATE TABLE [dbo].[EmpSalary_Info](
[id] [int] NULL,
[name] [varchar](50) NULL,
[salary] [int] NULL
) ON [PRIMARY]
Now insert some data into the "EmpSalary_Info" table. Then use the following procedure.
Complete Program
Show_Record_With_TextBox_Value.htm
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" >
function ShowAll()
{
var connection = new ActiveXObject("ADODB.Connection");
var connectionstring = "Data Source=.;Initial Catalog=EmpDetail;Persist Security Info=True;User ID=sa;Password=password@123;Provider=SQLOLEDB";
connection.Open(connectionstring);
var rs = new ActiveXObject("ADODB.Recordset");
rs.Open("select * from EmpSalary_Info ", connection);
rs.MoveFirst();
var span = document.createElement("span");
span.style.color = "Blue";
span.innerText = " ID " + " Name " + " Salary";
document.body.appendChild(span);
while (!rs.eof)
{
var span = document.createElement("span");
span.style.color = "green";
span.innerText = "\n " + rs.fields(0) + " | " + rs.fields(1) + " | " + rs.fields(2);
document.body.appendChild(span);
rs.MoveNext();
}
rs.close();
connection.close();
}
function DeleteRecord()
{
var txtid = document.getElementById('txtid').value;
if (txtid.length != 0) {
var connection = new ActiveXObject("ADODB.Connection");
var connectionstring = "Data Source=.;Initial Catalog=EmpDetail;Persist Security Info=True;User ID=sa;Password=password@123;Provider=SQLOLEDB";
connection.Open(connectionstring);
var rs = new ActiveXObject("ADODB.Recordset");
rs.Open("delete from EmpSalary_Info where EmpId=" + txtid, connection);
alert("Delete Record Successfuly");
txtid.value = " ";
connection.close();
}
else
{
alert("Please Enter Employee Id in TextBox");
}
}
</script>
<style type="text/css">
#main
{
height: 264px;
}
#ShowRecord
{
width: 67px;
z-index: 1;
left: 53px;
top: 119px;
position: absolute;
}
#showall
{
z-index: 1;
left: 146px;
top: 118px;
position: absolute;
}
</style>
</head>
<body style="height: 186px">
<div id="show"
style="font-size: x-large; font-weight: bold; height: 185px; color: #009999;">
Delete Employee Record<p style="font-size: medium; color: #000000;">
Enter Employee Id
<input id="txtid" type="text" /></p>
<p>
<input id="ShowRecord" type="button" value="Delete" onclick="DeleteRecord()" /> <input id="showall" type="button" value="Show All Record" onclick="ShowAll()" /></p>
</div>
</body>
</html>
Output 1
![first-image.jpg]()
Click on the "Show All Record" button.
![showAllrecord.jpg]()
Output 2
Enter the employee id into the TextBox that you want to delete from the database. Then click on the "Delete" button.
![delete-record.jpg]()
Output 3
After deleting the record, click on the "Show All Record" button. You will see that the record was deleted successfully.
![after-delete-record.jpg]()
Output 4
If you will click on the Delete button without entering any value into the TextBox then it will show the error.
![error-msg.jpg]()
For more information, download the attached sample application.