what is ienumerable interface?
The IEnumerator interface provides iterative capability for
a collection that is internal to a class.
IEnumerator requires that you implement three methods:
The MoveNext method, which increments the collection
index by 1 and returns a bool that indicates whether the
end of the collection has been reached.
The Reset method, which resets the collection index to
its initial value of -1. This invalidates the enumerator.
The Current method, which returns the current object at
[position].
public bool MoveNext()
{
position++;
return (position < carlist.Length);
}
public void Reset()
{position = 0;}
public object Current
{
get { return carlist[position];}
}
IEnumerable interface
The IEnumerable interface provides support for the foreach
iteration. IEnumerable requires that you implement the
GetEnumerator method.
public IEnumerator GetEnumerator()
{
return (IEnumerator)this;
}
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What is postback and autopostback in asp.net?
Hi this is the coding for adding data in to an xml table i want the coding for update and delete Try Dim emp_xml_doc As New XmlDocument If System.IO.File.Exists(Server.MapPath("emp.xml")) Then emp_xml_doc.Load(Server.MapPath("emp.xml")) Dim myrow_element As XmlElement myrow_element = emp_xml_doc.CreateElement("EmpDetails") Dim str As String str = "<EmpID>" & TxtEmpId.Text & "</EmpID>" & _ "<Empname>" & TxtName.Text & "</Empname>" & _ "<EmpSalary>" & TxtSalary.Text & "</EmpSalary>" myrow_element.InnerXml = str emp_xml_doc.DocumentElement.AppendChild(myrow_element) emp_xml_doc.Save(Server.MapPath("emp.xml")) Response.Write("Record Saved") Dim ds As New DataSet ds.ReadXml(Server.MapPath("emp.xml")) GridView1.DataSource = ds GridView1.DataBind() Else Response.Write("File does not exist.") End If Catch ex As Exception Response.Write(ex.ToString) End Try *********************** this is the xml file <?xml version="1.0" encoding="utf-8" ?> <Employee> <empdetails> <empid>100</empid> <empname>xxx</empname> <empsalary>2000</empsalary> </empdetails> <EmpDetails> <EmpID>yyy</EmpID> <Empname>dddd</Empname> <EmpSalary>77777</EmpSalary> </EmpDetails> <EmpDetails> <EmpID>rrrr</EmpID> <Empname>rrrr</Empname> <EmpSalary>6666</EmpSalary> </EmpDetails> <EmpDetails> <EmpID>qaqa</EmpID> <Empname>sini</Empname> <EmpSalary>50000</EmpSalary> </EmpDetails> <EmpDetails> <EmpID>errrrrrrrr</EmpID> <Empname>rrrrrrrrr</Empname> <EmpSalary>677777</EmpSalary> </EmpDetails> <EmpDetails> <EmpID>rrr</EmpID> <Empname>rrr</Empname> <EmpSalary>33</EmpSalary> </EmpDetails> </Employee>
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