в 15:30, 26 мая 2010

2010-05-26T15:30:47Z

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2010-05-26T11:51:56Z

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==Database query form Demo (VB.net)==



<source lang="csharp">
<%--
Code revised from
ASP.NET Tips & Techniques (Paperback)
by Greg Buczek

# Publisher: McGraw-Hill/Osborne Media; 1st edition (May 21, 2002)
# Language: English
# ISBN: 0072225149
--%>
<%@ Page Language=VB Debug=true %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OLEDB" %>
<script runat=server>
Sub SubmitBtn_Click(Sender As Object, E As EventArgs)
Dim DBConn as OleDbConnection
Dim DBCommand As OleDbDataAdapter
Dim DSPageData as New DataSet
Dim TheQuery as String
DBConn = New OleDbConnection( _
"PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
& "DATA SOURCE=" _
& Server.MapPath _
("EmpDB.mdb;"))
TheQuery = "Select " & txtFieldList.Text _
& " From " & txtTableName.Text
If txtWhere.Text <> "" Then
TheQuery = TheQuery & " Where " _
& txtWhere.Text
End If
If txtOrder.Text <> "" Then
TheQuery = TheQuery & " Order By " _
& txtOrder.Text
End If
DBCommand = New OleDbDataAdapter(TheQuery, DBConn)
DBCommand.Fill(DSPageData, _
"QueryResults")
dgQuery.DataSource = _
DSPageData.Tables("QueryResults").DefaultView
dgQuery.DataBind()
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Raw Query Page</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:label
id="lblMessage2"
font-size="10pt"
font-name="Lucida Console"
text="Enter your query text"
runat="server"
/>
<BR>
Select (Field List)
<BR>
<asp:textbox
id="txtFieldList"
runat="server"
/>
<asp:requiredfieldvalidator
id="rfvFieldList"
controltovalidate="txtFieldList"
display="Dynamic"
font-name="Tahoma"
font-size="10pt"
runat=server>
Field list is required!
</asp:requiredfieldvalidator>
<BR>
From (Table Name)
<BR>
<asp:textbox
id="txtTableName"
runat="server"
/>
<asp:requiredfieldvalidator
id="rfvTableName"
controltovalidate="txtTableName"
display="Dynamic"
font-name="Tahoma"
font-size="10pt"
runat=server>
Field list is required!
</asp:requiredfieldvalidator>
<BR>
Where (Optional)
<BR>
<asp:textbox
id="txtWhere"
runat="server"
/>
<BR>
Order By (Optional)
<BR>
<asp:textbox
id="txtOrder"
runat="server"
/>
<BR>
<asp:button
id="butOK"
text=" OK "
OnClick="SubmitBtn_Click"
runat="server"
/>
<BR><BR>
<asp:datagrid
id="dgQuery"
runat="server"
autogeneratecolumns="True"
/>
</form>
</BODY>
</HTML>
</source>

<A href="http://www.nfex.ru/Code/ASPDownload/EmpDB.zip">EmpDB.zip( 8 k)</a>

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ASP.Net/Components/Database Query - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия