无法从ASP.NET中的SQL数据库获取确切的值
问题描述：
我正在创建ASP.NET，C＃应用程序。在SQL Server的gridview中显示输入值结果时两个文本框在哪里。问题是，当我输入数字5我得到15的价值，example。有人可以提供一个提示吗？无法从ASP.NET中的SQL数据库获取确切的值
如何从文本框中键入数据库中的确切值？
源代码：
SQL程序
Create table Hall
(
HallID int,
Name nvarchar(50),
TicketLimit int
)
GO
Create table HallGroup
(
HallID int,
HallGroupID int,
Name nvarchar(50),
AZ int
)
GO
Create table HallSeat
(
HallGroupID int,
ShowSeatID int,
Color nvarchar(15),
Price int,
SeatRow int,
SeatNumber int,
IsReserved bit
)
/**Search Procedure ****/
USE [Reservations]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Procedure [dbo].[Search]
@searchNumber varchar(50),
@searchRow varchar(50)
as
Begin
select * from HallSeat where (SeatNumber like '%' + @searchNumber + '%') and (SeatRow like '%' + @searchRow + '%')
End
代码隐藏
protected void ButtonSearch_Click(object sender, EventArgs e)
{
cs = ConfigurationManager.ConnectionStrings["CS"].ConnectionString;
SqlConnection result = new SqlConnection(cs);
String search = "Search"; // Paieskos
SqlCommand find = new SqlCommand(search, result);
find.CommandType = CommandType.StoredProcedure;
find.Parameters.Add("@searchRow", SqlDbType.VarChar).Value = TextBoxRow.Text;
find.Parameters.Add("@searchNumber", SqlDbType.VarChar).Value = TextBoxNumber.Text;
result.Open();
SqlDataReader dr;
dr = find.ExecuteReader();
if (dr.HasRows)
{
dr.Read();
rep_bind();
GridView1.Visible = true;
TextBoxRow.Text = "";
TextBoxNumber.Text = "";
}
else
{
GridView1.Visible = false;
}
}
.aspx的
<div class="container">
<asp:TextBox ID="TextBoxRow" placeholder="Type Seat Row" runat="server" style="border-radius: 5px;" Height="35px"></asp:TextBox>
<asp:TextBox ID="TextBoxNumber" placeholder="Type Seat Number" runat="server" style="border-radius: 5px;" Height="35px"></asp:TextBox>
<br>
<br>
<br>
<asp:Button ID="ButtonSearch" runat="server" CssClass="button" Text="Search for availability" OnClick="ButtonSearch_Click" OnClientClick="true" UseSubmitBehavior="false" />
<style type="text/css">
.button {
background:white;
color: black;
border: solid 3px #6496c8;
font-family: cursive;
font-size: 18px;
}
.button:hover,
.button.hover
{
border-color: #346392;
background: #7ABCDC;
color: white;
}
.button:active{
border-color: #27496d;
color: #27496d;
}
</style>
</div>
<!-- Paieskos rezultatu isvedimas GridView-->
<div id="GRID">
<asp:GridView ID="GridView1" runat="server" HorizontalAlign="Center" AllowPaging="True" CellPadding="3" Width="568px" GridLines="Vertical" Visible="False" AutoGenerateColumns="False" BackColor="White" BorderColor="#999999" BorderStyle="None" BorderWidth="1px">
<FooterStyle BackColor="#CCCCCC" ForeColor="Black" />
<HeaderStyle BackColor="#121315" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
<RowStyle BackColor="#EEEEEE" ForeColor="Black" />
<SelectedRowStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#0000A9" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#000065" />
<AlternatingRowStyle BackColor="#DCDCDC" />
<Columns>
<asp:TemplateField HeaderText="HALL">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("HallGroupID") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("HallGroupID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="ID">
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("ShowSeatID") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("ShowSeatID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="COLOR">
<EditItemTemplate>
<asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Color") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Bind("Color") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="PRICE">
<EditItemTemplate>
<asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("Price") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label5" runat="server" Text='<%# Bind("Price") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="ROW">
<EditItemTemplate>
<asp:TextBox ID="TextBox6" runat="server" Text='<%# Bind("SeatRow") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label6" runat="server" Text='<%# Bind("SeatRow") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="NUMBER">
<EditItemTemplate>
<asp:TextBox ID="TextBox7" runat="server" Text='<%# Bind("SeatNumber") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label7" runat="server" Text='<%# Bind("SeatNumber") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="STATUS" SortExpression="Active">
<ItemTemplate><%# (Boolean.Parse(Eval("IsReserved").ToString())) ? "RESERVED" : "FREE" %></ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="ButtonReserve" style="background:#2ACC16; border-radius:8px;" runat="server" CommandName="Reserve" HeaderText="BOOK SEAT" Text="Reserve" OnClick="ButtonReserve_Click" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
答
您正在使用like运营商在SQL一边进行搜索。它不会比较，因为它会搜索一个模式。在你的例子中，它会得到所有的记录，其中有5。
欲了解更多信息请访问Like operator
要解决您的解决方案使用=操作员比较准确的输入。
select * from HallSeat where (SeatNumber = +'+ @searchNumber +'+) and (SeatRow like '%' + @searchRow + '%')
答
您必须将此样本 在DataReader的绑定到GridView，如不执行者datarader.Read（）之前，你的绑定。
using (SqlConnection con = new SqlConnection(strConnString))
{
using (SqlCommand cmd = new SqlCommand())
{
cmd.CommandText = "select top 10 * from Customers";
cmd.Connection = con;
con.Open();
GridView1.DataSource = cmd.ExecuteReader();
GridView1.DataBind();
con.Close();
}
}
而正如其他人所说，你的存储过程是不正确的。 应该是这样的
ALTER Procedure [dbo].[Search]
@searchNumber int,
@searchRow int
as
Begin
select * from HallSeat where SeatNumber = @searchNumber and SeatRow = @searchRow
End
我没有看到任何地方你的代码或你有什么试过。 –
请显示你写了什么代码连接到数据库并获取 –
你必须显示你的代码和至少SQL查询你使用 –