帮助更正具有查询stirng的sql语句. [英] help in correting the sql statment having query stirng.
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问题描述
我正在使用此代码在productcatalog.aspx页面的基础上过滤数据
产品目录.aspx
i am filtering the data on the bases of productscatalog.aspx page using this code
Product Catalog.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ProductCatalog.aspx.cs" Inherits="ProductCatalog" %>
<!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 runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
onselectedindexchanged="GridView1_SelectedIndexChanged" Width="385px">
<columns>
<asp:TemplateField>
<itemtemplate>
<table style="width: 100%">
<tr>
<td rowspan="4" valign="top" width="5%">
<asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("ProductImage") %>' /></td>
<td align="left">
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# Eval("ProductID", "~/displayproduct.aspx?productid={0}") %>'
Text='<%# Eval("ProductName") %>'></td>
</tr>
<tr>
<td align="left">
<asp:Label ID="Label3" runat="server" Text='<%# GetShortDescription(Eval("Description").ToString()) %>'></td>
</tr>
<tr>
<td align="left">
<asp:Label ID="Label5" runat="server" SkinID="FormLabel" Text="Price :">
<asp:Label ID="Label4" runat="server" Text='<%# Eval("UnitCost", "{0:C}") %>'></td>
</tr>
<tr>
<td align="right">
</td>
</tr>
</table>
</itemtemplate>
</columns>
</div>
</form>
</body>
</html>
产品catalog.cs文件为
product catalog.cs file is
SqlConnection conn = new SqlConnection("Data Source=FAROOQPC\\SQLEXPRESS; Initial Catalog=ecommerce; Integrated Security=True");
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
LoadGridView();
}
}
private void LoadGridView()
{
//conn.Open();
SqlDataAdapter da = new SqlDataAdapter("Select * from ESK_Products where CategoryID='"+Request.QueryString["CategoryID"]+"')", conn);
DataSet ds = new DataSet();
da.Fill(ds, "mydb");
GridView1.DataSource = ds.Tables[0];
GridView1.DataBind(); ;
//conn.Close();
}
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
}
protected string GetShortDescription(string longdesc)
{
if (longdesc.Length <= 255)
{
return longdesc;
}
else
{
return longdesc.Substring(0, 255) + "...";
}
}
}
而且我有一个类别页面，该页面在datagrid vview中具有一个链接按钮，传递查询字符串
and i have the catgory page which has a linkbutton in datagrid vview passing the query string
<%@ 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 runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
Width="124px">
<columns>
<asp:TemplateField>
<itemtemplate>
<asp:LinkButton ID="LinkButton1" runat="server"
Text='<%# Eval("CategoryName") %>' PostBackUrl='<%#"~/ProductCatalog.aspx?ID="+Eval("CategoryID") %>'>
</itemtemplate>
</columns>
<emptydatatemplate>
<asp:HyperLink ID="HyperLink1" runat="server"
Text='<%# Eval("CatagoryName") %>'>
</emptydatatemplate>
</div>
</form>
</body>
</html>
我在sqlquery中得到语法错误附近的错误)
任何人都可以解决..
i am getting the error in sqlquery that syntax error near )
can anyone figure it out..
推荐答案
为了上帝的缘故-使用Visual Studio随附的工具，在代码中放置一个try/catch块，并在调试器下运行它.
For god''s sake - use the tools that come with Visual Studio, put a try/catch block around your code, and run it under the debugger.
看看这一行:
look at this line :
SqlDataAdapter da = new SqlDataAdapter("Select * from ESK_Products where CategoryID=''"+Request.QueryString["CategoryID"]+"'')", conn);
它必须像:
It has to be like :
SqlDataAdapter da = new SqlDataAdapter("Select * from ESK_Products where CategoryID=''"+Request.QueryString["CategoryID"]+"''", conn);
如果您仔细观察，则会在末尾添加多余的)".
希望这能解决您的问题.
祝一切顺利.
If you observer closely, you have put redundant ")" at the end.
Hope this solved your problem.
All the best.
以此回复您的查询..
Replce your query with this..
SqlDataAdapter da = new SqlDataAdapter("Select * from ESK_Products where CategoryID=''"+Request.QueryString["CategoryID"]+"''", conn);
只需一个右括号.
Needed only one closing bracket..
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