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This tutorial will show you how to Repeater pagesetting using ASP.NET 2.0 and C#
This tutorial will show you how to Repeater pagesetting using ASP.NET 2.0 and C#.NET .First, you need to import the System.Text.RegularExpressions namespace..
| using System.Text.RegularExpressions; |
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We use the Button1_Click to do work.
The Regex class contains several static methods that allow you to use a regular expression without explicitly creating a Regex object. Using a static method is equivalent to constructing a Regex object, using it once and then destroying it. The Regex class is immutable (read-only) and is inherently thread safe. Regex objects can be created on any thread and shared between threads. The Methods of the Replace is Overloaded. Within a specified input string, replaces strings that match a regular expression pattern with a specified replacement string.
public partial class RegexCsharp : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) {
Label2.Text = InputText(TextBox1.Text, TextBox1.Text.Length); } private string InputText(string text, int maxLength) {
text = text.Trim(); if (string.IsNullOrEmpty(text)) {
return string.Empty; } if (text.Length > maxLength) {
text = text.Substring(0, maxLength); } text = Regex.Replace(text, "[\\s]{2,}", " "); text = Regex.Replace(text, "(<[b|B][r|R]/*>)+|(<[p|P](.|\\n)*?>)", "\n"); text = Regex.Replace(text, "(\\s*&[n|N][b|B][s|S][p|P];\\s*)+"," "); text = Regex.Replace(text, "<(.|\\n)*?>", string.Empty); text = text.Replace("'", "''"); return text; } |
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The front end Default.aspx page looks something like this:
<asp:Label ID="Label1" runat="server" Text="Please Input:" Width="91px"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
<br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Submit" Width="61px" />
<br />
<br />
<asp:Label ID="Label2" runat="server" Width="254px"></asp:Label></fieldset>
<br />
<br /> |
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The flow for the code behind page is as follows.
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text.RegularExpressions;
public partial class RegexCsharp : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) {
Label2.Text = InputText(TextBox1.Text, TextBox1.Text.Length); } private string InputText(string text, int maxLength) {
text = text.Trim(); if (string.IsNullOrEmpty(text)) {
return string.Empty; } if (text.Length > maxLength) {
text = text.Substring(0, maxLength); } text = Regex.Replace(text, "(<[b|B][r|R]/*>)+|(<[p|P](.|\\n)*?>)", "\n"); text = Regex.Replace(text, "(\\s*&[n|N][b|B][s|S][p|P];\\s*)+"," "); text = Regex.Replace(text, "<(.|\\n)*?>", string.Empty); text = text.Replace("'", "''"); return text; } |
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