asp.net中的多重搜索文本框

我在我的系统中有多个文本框和一个下拉列表，我使用查询构建器从数据库中的多个表（SQL服务器）中选择数据，并显示他们在网格视图asp.net中的多重搜索文本框

建议ID：（文本）员工ID：（文本）状态：（下拉列表）职员名称：（文本）

......... .....................

我想通过输入一个字段或多个字段来搜索结果。问题是，当我在互联网上浏览以测试查询是否有效时，我发现它只能通过输入所有字段才有效。

这是HTML内部产生查询生成器（Visual Studio 2010中）

SELECT 
SuggestionDetail.SuggestionDescription, SuggestionDetail.SuggestionID, 
SuggestionDetail.DateOfSubmission, Employee.EmployeeID, Employee.City, 
Employee.EmployeeName, Category.CategoryName, SuggestionStatusDetail.DateOfLastUpdate, 
SuggestionStatus.StatusName 

FROM 
Employee 

INNER JOIN 
SuggestionDetail 

ON 
Employee.EmployeeID = SuggestionDetail.EmployeeID 

INNER JOIN 
Category 

ON 
SuggestionDetail.CategoryID = Category.CategoryID 

INNER JOIN 
SuggestionStatusDetail 

ON 
SuggestionDetail.SuggestionID = SuggestionStatusDetail.SuggestionID 

INNER JOIN 
SuggestionStatus 

ON 
SuggestionStatusDetail.StatusID = SuggestionStatus.StatusID 

WHERE 
(Employee.EmployeeName LIKE N'%' + @empname + N'%') 
OR 
(Employee.EmployeeID LIKE '%' + @empid + '%') 
OR 
(SuggestionDetail.SuggestionID LIKE '%' + @txtDocID + '%') 
OR 
(SuggestionStatus.StatusName LIKE N'%' + @StatusName + N'%')

生成的查询和这个代码：

 <asp:GridView ID="GridView1" runat="server" BackColor="White" class="GridView" 
     BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px" CellPadding="4" 
     EnableModelValidation="True" ForeColor="Black" GridLines="Vertical" 
     AutoGenerateColumns="False" 
     DataSourceID="SqlDataSource2"> 
     <AlternatingRowStyle BackColor="White" /> 
     <Columns> 
      <asp:BoundField DataField="SuggestionDescription" HeaderText="SuggestionDescription" 
       SortExpression="SuggestionDescription" /> 
      <asp:BoundField DataField="SuugestionID" HeaderText="SuggestionID" 
       InsertVisible="False" ReadOnly="True" SortExpression="SuggestionID" /> 
      <asp:BoundField DataField="DateOfSubmission" HeaderText="DateOfSubmission" 
       SortExpression="DateOfSubmission" /> 
      <asp:BoundField DataField="EmployeeID" HeaderText="EmployeeID" 
       SortExpression="EmployeeID" /> 
      <asp:BoundField DataField="City" HeaderText="City" SortExpression="City" /> 
      <asp:BoundField DataField="EmployeeName" HeaderText="EmployeeName" 
       SortExpression="EmployeeName" /> 
      <asp:BoundField DataField="CategoryName" HeaderText="CategoryName" 
       SortExpression="CategoryName" /> 
      <asp:BoundField DataField="DateOfLastUpdate" HeaderText="DateOfLastUpdate" 
       SortExpression="DateOfLastUpdate" /> 
      <asp:BoundField DataField="StatusName" HeaderText="StatusName" 
       SortExpression="StatusName" /> 
     </Columns>

任何帮助，请，我还是新的视觉工作室。

 <asp:SqlDataSource ID="SqlDataSource2" runat="server" 
     ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 

     SelectCommand="SELECT SuggestionDetail.SuggestionDescription, SuggestionDetail.SuggestionID, SuggestionDetail.DateOfSubmission, Employee.EmployeeID, Employee.City, Employee.EmployeeName, Category.CategoryName, SuggestionStatusDetail.DateOfLastUpdate, SuggestionStatus.StatusName FROM Employee INNER JOIN SuggestionDetail ON Employee.EmployeeID = SuggestionDetail.EmployeeID INNER JOIN Category ON SuggestionDetail.CategoryID = Category.CategoryID INNER JOIN SuggestionStatusDetail ON SuggestionDetail.SuggestionID = SuggestionStatusDetail.SuggestionID INNER JOIN SuggestionStatus ON SuggestionStatusDetail.StatusID = SuggestionStatus.StatusID WHERE (Employee.EmployeeName LIKE N'%' + @empname + N'%') OR (Employee.EmployeeID LIKE '%' + @empid + '%') OR (SuggestionDetail.SuggestionID LIKE '%' + @txtDocID + '%') OR (SuggestionStatus.StatusName LIKE N'%' + @StatusName + N'%')"> 
     <SelectParameters> 
      <asp:ControlParameter ControlID="txtStaffName" Name="empname" 
       PropertyName="Text" /> 
      <asp:ControlParameter ControlID="txtStaffID" Name="empid" PropertyName="Text" /> 
      <asp:ControlParameter ControlID="txtDocID" Name="txtDocID" 
       PropertyName="Text" /> 
      <asp:ControlParameter ControlID="ddStatus" Name="StatusName" 
       PropertyName="SelectedValue" /> 
     </SelectParameters> 
    </asp:SqlDataSource>

来源

2013-05-13 Fatima Hussain Alkhalsan

请看这个答案：http://stackoverflow.com/a/4080801/1380428 – 2013-05-13 09:50:39

IF连接和其他东西都工作正常，再看看我不得不改变where子句中的一些领域。当所有参数都为空/空白（如可为空）并根据任何一个参数返回过滤结果为空/空白时，它将返回整个结果。

CREATE/ALTER STOREDPROCEDURE SP_NAME 
@empname varchar(50) = NULL, 
@empid int = NULL, 
@txtDocID int = NULL, 
@StatusName varchar(50) = NULL 
AS 
BEGINE 
    SELECT 
    SuggestionDetail.SuggestionDescription, SuggestionDetail.SuggestionID, 
    SuggestionDetail.DateOfSubmission, Employee.EmployeeID, Employee.City, 
    Employee.EmployeeName, Category.CategoryName, SuggestionStatusDetail.DateOfLastUpdate, 
    SuggestionStatus.StatusName 

    FROM 
    Employee 

    INNER JOIN 
    SuggestionDetail 

    ON 
    Employee.EmployeeID = SuggestionDetail.EmployeeID 

    INNER JOIN 
    Category 

    ON 
    SuggestionDetail.CategoryID = Category.CategoryID 

    INNER JOIN 
    SuggestionStatusDetail 

    ON 
    SuggestionDetail.SuggestionID = SuggestionStatusDetail.SuggestionID 

    INNER JOIN 
    SuggestionStatus 

    ON 
    SuggestionStatusDetail.StatusID = SuggestionStatus.StatusID 

    WHERE 
    (Employee.EmployeeName LIKE N'%' + @empname + N'%' OR @empname IS NULL) 
    OR 
    (Employee.EmployeeID LIKE '%' + @empid + '%' OR @empid IS NULL) 
    OR 
    (SuggestionDetail.SuggestionID LIKE '%' + @txtDocID + '%' OR @txtDocID IS NULL) 
    OR 
    (SuggestionStatus.StatusName LIKE N'%' + @StatusName + N'%' OR @StatusName IS NULL) 
END

来源

2013-05-13 08:53:12

asp.net中的多重搜索文本框

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