如何在没有文件扩展名的情况下显示数据库存储图像的搜索结果 | 如何在没有文件扩展名的情况下显示数据库存储图像的搜索结果

本文介绍了如何在没有文件扩展名的情况下显示数据库存储图像的搜索结果的处理方法，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

我有一个自动填充搜索框，可以剔除存储在数据库中的图像缩略图。问题是，每次图像名称出现在自动填充搜索框中时，.jpg扩展名都会显示。无论如何我可以修改这些代码以防止.jpg扩展出现吗？下面是我使用javascript和ashx的现有代码。提前谢谢！

我的尝试：

I have an autocomplete search box that culled up the thumbnail of images stored in the database. The problem is that the .jpg extension shows up each times the image name appears in the autocomplete search box. Is there anyway I can modify these codes to prevent the .jpg extension from appearing? Below is my existing code using javascript and ashx. Thank you in advance!

What I have tried:

the aspx:

<script src="scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script src="scripts/jquery.autocomplete.js" type="text/javascript"></script>
<script type="text/javascript">
    $(document).ready(function () {
        $("#<%=txtSearch.ClientID%>").autocomplete("Search.ashx", {
            width: 200,
            formatItem: function (data, i, n, value) {
                return "<img style = 'width:50px;height:50px' src= 'Images/" + value.split(",")[1] + "'/> " + value.split(",")[0];
            },
            formatResult: function (data, value) {
                return value.split(",")[0];
            }
        });
    });
</script>

<style type="text/css">
.Gridview
{
font-family:Verdana;
font-size:10pt;
font-weight:normal;
color:black;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
    Search here:
    <asp:TextBox ID="txtSearch" runat="server" />
    <br />
</div>

<div>
<asp:FileUpload ID="fileuploadimages" runat="server" />
<br />
<asp:Button ID="btnSubmit" runat="server" Text="Submit" onclick="btnSubmit_Click" />
</div>
<div>
</div>
    <asp:Label ID="lblResult" runat="server"></asp:Label>
</form>
</body>
</html>

the ashx:

public class Search : IHttpHandler {
public void ProcessRequest (HttpContext context)
{
string searchText = context.Request.QueryString["q"];
string strcon = ConfigurationManager.ConnectionStrings["dbconnection"].ConnectionString;
SqlConnection connection = new SqlConnection(strcon);
connection.Open();
SqlCommand cmd = new SqlCommand("select ID,ImageName,ImagePath from ImagesPath where ImageName Like @Search + '%'", connection);
cmd.Parameters.AddWithValue("@Search",searchText);
StringBuilder sb = new StringBuilder();
using(SqlDataReader dr=cmd.ExecuteReader())
{
while(dr.Read())
{
sb.Append(string.Format("{0},{1}{2}",dr["ImageName"],dr["ImageName"],Environment.NewLine));
}
}
connection.Close();
context.Response.Write(sb.ToString());
}
public bool IsReusable
{
get
{
return false;
}
}
}

推荐答案

the ashx:

public class Search : IHttpHandler {
public void ProcessRequest (HttpContext context)
{
string searchText = context.Request.QueryString["q"];
string strcon = ConfigurationManager.ConnectionStrings["dbconnection"].ConnectionString;
SqlConnection connection = new SqlConnection(strcon);
connection.Open();
SqlCommand cmd = new SqlCommand("select ID,ImageName,ImagePath from ImagesPath where ImageName Like @Search + '%'", connection);
cmd.Parameters.AddWithValue("@Search",searchText);
StringBuilder sb = new StringBuilder();
using(SqlDataReader dr=cmd.ExecuteReader())
{
while(dr.Read())
{
sb.Append(string.Format("{0},{1}{2}",dr["ImageName"],dr["ImageName"],Environment.NewLine));
}
}
connection.Close();
context.Response.Write(sb.ToString());
}
public bool IsReusable
{
get
{
return false;
}
}
}

System.IO.Path.GetFileNameWithoutExtension(dr["ImageName"]);

无论你的实例是什么dr [ImageName]表示对上述代码的标签更改。

So whichever of your instances of dr["ImageName"] represents what is seen as the label change to the above code.

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