本文介绍了我可以将FilterExpression用于多个字段的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我可以将FilterExpression用于多个字段..am使用访问数据库
和结构是
UserId，UserName，LastName，Location
我如何为多个字段进行过滤
Can i use FilterExpression for more than one field ..am using access database
and structure is
UserId,UserName,LastName,Location
how can i do this filtration for more than one field
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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 id="Head1" runat="server">
<title>Highlight the Search Keywords in Gridview </title>
<style type="text/css">
.GridviewDiv
{
font-size: 100%;
font-family: 'Lucida Grande' , 'Lucida Sans Unicode' , Verdana, Arial, Helevetica, sans-serif;
color: #303933;
}
Table.Gridview
{
border: solid 1px #df5015;
}
.Gridview th
{
color: #FFFFFF;
border-right-color: #abb079;
border-bottom-color: #abb079;
padding: 0.5em 0.5em 0.5em 0.5em;
text-align: center;
}
.Gridview td
{
border-bottom-color: #f0f2da;
border-right-color: #f0f2da;
padding: 0.5em 0.5em 0.5em 0.5em;
}
.Gridview tr
{
color: Black;
background-color: White;
text-align: left;
}
:link, :visited
{
color: #DF4F13;
text-decoration: none;
}
.highlight
{
text-decoration: none;
color: black;
background: yellow;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div class="GridviewDiv">
<p>
Enter UserName :
<asp:TextBox ID="txtSearch" runat="server" />
<asp:ImageButton ID="btnSearch" ImageUrl="~/SearchButton.png" runat="server" Style="top: 5px;
position: relative" OnClick="btnSearch_Click" />
<asp:ImageButton ID="btnClear" ImageUrl="~/Clearbutton.png" runat="server" Style="top: 5px;
position: relative" OnClick="btnClear_Click" /><br />
<br />
</p>
<asp:GridView ID="gvDetails" runat="server" AutoGenerateColumns="False" AllowPaging="True"
AllowSorting="true" DataSourceID="dsDetails" Width="540px" PageSize="10" CssClass="Gridview">
<HeaderStyle BackColor="#df5015" />
<Columns>
<asp:TemplateField HeaderText="UserName">
<ItemTemplate>
<asp:Label ID="lblFirstname" Text='<%# HighlightText(Eval("UserName").ToString()) %>'
runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="LastName">
<ItemTemplate>
<asp:Label ID="lblLastname" Text='<%# Eval("LastName") %>' runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Location">
<ItemTemplate>
<asp:Label ID="lblLocation" Text='<%#Eval("Location") %>' runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
<asp:AccessDataSource ID="dsDetails" runat="server"
DataFile="~/App_Data/search.mdb" SelectCommand="SELECT * FROM [UserDetails]" FilterExpression="UserName LIKE '%{0}%'" >
<FilterParameters>
<asp:ControlParameter Name="UserName" ControlID="txtSearch" PropertyName="Text" />
</FilterParameters>
</asp:AccessDataSource>
<%--<asp:SqlDataSource ID="dsDetails" runat="server" ConnectionString="<%$ConnectionStrings:dbconnection %>"
SelectCommand="select * from UserDetails" FilterExpression="UserName LIKE '%{0}%'">
<FilterParameters>
<asp:ControlParameter Name="UserName" ControlID="txtSearch" PropertyName="Text" />
</FilterParameters>
</asp:SqlDataSource>--%>
</form>
</body>
</html>
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
public partial class _Default : System.Web.UI.Page
{
private string SearchString = "";
protected void Page_Load(object sender, EventArgs e)
{
}
public string HighlightText(string InputTxt)
{
string Search_Str = txtSearch.Text;
// Setup the regular expression and add the Or operator.
Regex RegExp = new Regex(Search_Str.Replace(" ", "|").Trim(), RegexOptions.IgnoreCase);
// Highlight keywords by calling the
//delegate each time a keyword is found.
return RegExp.Replace(InputTxt, new MatchEvaluator(ReplaceKeyWords));
}
public string ReplaceKeyWords(Match m)
{
return ("<span class=highlight>" + m.Value + "</span>");
}
protected void btnSearch_Click(object sender, ImageClickEventArgs e)
{
// Set the value of the SearchString so it gets
SearchString = txtSearch.Text;
}
protected void btnClear_Click(object sender, ImageClickEventArgs e)
{
// Simple clean up text to return the Gridview to it's default state
txtSearch.Text = "";
SearchString = "";
gvDetails.DataBind();
}
}推荐答案
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
public partial class _Default : System.Web.UI.Page
{
private string SearchString = "";
protected void Page_Load(object sender, EventArgs e)
{
}
public string HighlightText(string InputTxt)
{
string Search_Str = txtSearch.Text;
// Setup the regular expression and add the Or operator.
Regex RegExp = new Regex(Search_Str.Replace(" ", "|").Trim(), RegexOptions.IgnoreCase);
// Highlight keywords by calling the
//delegate each time a keyword is found.
return RegExp.Replace(InputTxt, new MatchEvaluator(ReplaceKeyWords));
}
public string ReplaceKeyWords(Match m)
{
return ("<span class=highlight>" + m.Value + "</span>");
}
protected void btnSearch_Click(object sender, ImageClickEventArgs e)
{
// Set the value of the SearchString so it gets
SearchString = txtSearch.Text;
}
protected void btnClear_Click(object sender, ImageClickEventArgs e)
{
// Simple clean up text to return the Gridview to it's default state
txtSearch.Text = "";
SearchString = "";
gvDetails.DataBind();
}
}
这篇关于我可以将FilterExpression用于多个字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！