don't add a duplicate node

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hi guys,

I have a xml file which Parent Node is created by textbox.text on button click. if textbox.text is again include a text which is already include as a parent node in xml file. it gives a error on label which visibility is false at run time.

thanks

Posted 16-Sep-11 20:47pm

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BillWoodruff 17-Sep-11 8:14am

Is your question here: "how do I check an XML file (you are creating) for the presence of a Parent Node whose text/description matches a new Parent Node I am about to add" ?

Prerak Patel 19-Sep-11 0:15am

Not clear. Rephrase your question.

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Muralikrishna8811 · Answer 1 · 2011-09-20T05:39:00

Hi,

here 'm providing some code to display some error while you entered existing tag in xml

C#

protected void Button1_Click(object sender, EventArgs e)
{
    XmlDocument xmldoc = new XmlDocument();
    xmldoc.Load(Server.MapPath ("~/SomeFiles/XMLFile2.xml"));
    XmlNodeList xmlnodli = xmldoc.GetElementsByTagName(TextBox1.Text);
    if (xmlnodli.Count > 0)
    {
        Label1.Text = "your enter tag is already exists";
        Label1.Visible = true;
    }
}

I hope this code helps you.

All the best