Replace all occurrences of a word between pre tag in C# and VB.Net

Hi sun21170,

Use RegularExpressions.

Refer below sample.

HTML

<asp:Label ID="lblData" runat="server" />

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    string str = @"<div>dds \n ss \n xdd</div><pre>sdddsds \n mike \n snippets</pre>";
    string result = System.Text.RegularExpressions.Regex.Replace(str, @"<pre>(.*?)</pre>", m =>
    {
        return m.Groups[1].Value.Replace("\\n", string.Empty);
    });
    lblData.Text = result;
}

VB.Net

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    Dim str As String = "<div>dds \n ss \n xdd</div><pre>sdddsds \n mike \n snippets</pre>"
    Dim result As String = System.Text.RegularExpressions.Regex.Replace(str, "<pre>(.*?)</pre>",
                                       Function(m) m.Groups(1).Value.Replace("\n", String.Empty))
    lblData.Text = result
End Sub

Output

sdddsds mike snippets