[英]multiple search textboxes in asp.net
我的系統中有多個文本框和一個下拉列表,並且我正在使用“查詢”構建器從數據庫(SQL Server)的多個表中選擇數據,並將其顯示在網格視圖中
建議ID :(文本框)人員ID :(文本框)狀態:(下拉列表)人員名稱:(文本框)
....................................
我希望搜索結果通過輸入一個或多個字段來起作用。 問題是,當我在互聯網上瀏覽以測試查詢是否有效時,我發現它僅通過輸入所有字段即可起作用。
這是在查詢生成器中生成的查詢(Visual Studio 2010)
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'%')
這是在HTML內部生成的代碼:
<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>
請任何幫助,我仍然是Visual Studio中的新手。
<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>
如果聯接和其他事情運行良好,那么我在where子句中更改了某些字段。 當所有參數為空/空白(如可為空)時,它會返回整個結果,並根據任一參數為空/空白返回過濾結果。
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
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