в 15:30, 26 мая 2010

2010-05-26T15:30:47Z

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2010-05-26T11:50:42Z

1 версия

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==Bind Data from Sql Server (VB.net)==



<source lang="csharp">
<%@ Page Language=VB Debug=true %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQLClient" %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
Dim DBConn as SQLConnection
Dim DBCommand As SQLDataAdapter
Dim DSPageData as New DataSet
" DBConn = New SQLConnection("server=localhost;" _
" & "Initial Catalog=TT;" _
" & "User Id=sa;" _
" & "Password=yourpassword;")
DBConn = New SQLConnection("Data Source=whsql-v08.prod.mesa1.secureserver.net;Initial Catalog=DB_49907;User ID=nfexuser;Password="password";")
DBCommand = New SQLDataAdapter _
("Select Count(ID) as TheCount " _
& "from Employee", DBConn)
DBCommand.Fill(DSPageData, _
"EmpCount")
DBCommand = New SQLDataAdapter _
("Select Max(Salary) as HighSal " _
& "from Employee", DBConn)
DBCommand.Fill(DSPageData, _
"HighSal")
lblMessage.Text = "Total Employees: " _
& DSPageData.Tables("EmpCount"). _
Rows(0).Item("TheCount") _
& "<BR><BR>Highest Salary: " _
& FormatCurrency(DSPageData.Tables("HighSal"). _
Rows(0).Item("HighSal"))
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Values in an SQL Server Table</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:label
id="lblMessage"
runat="Server"
/>
</form>
</BODY>
</HTML>

</source>

==Get data in database through SqlDataAdapter (C#)==



<source lang="csharp">
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<html>
<title>DataSet Example</title>
<head>
<script runat="server">
void Page_Load()
{
String ConnStr = "Data Source=whsql-v08.prod.mesa1.secureserver.net;Initial Catalog=DB_49907;User ID=nfexuser;Password="password";";
String SQL = "SELECT ID, FirstName FROM Employee "
+ "WHERE ID IS NOT NULL";
SqlDataAdapter TitlesAdpt = new SqlDataAdapter(SQL, ConnStr);
DataSet Titles = new DataSet();
// No need to open or close the connection
// since the SqlDataAdapter will do this automatically.
TitlesAdpt.Fill(Titles);
Output.Text = "<table>";
foreach (DataRow Title in Titles.Tables[0].Rows)
{
Output.Text += "<tr>";
Output.Text += "<td>" + Title[0] + "</td>";
Output.Text += "<td>" + String.Format("{0:c}", Title[1])
+ "</td>";
Output.Text += "</tr>";
}
Output.Text += "</table>";
}
</script>
</head>
<body>
<h1>DataSet Example</h1>
<asp:label id="Output" runat="server"/>
</body>
</html>

</source>

==Read data from SqlConnection (VB.net)==



<source lang="csharp">
<%@ Page Language=VB Debug=true %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQLClient" %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
If Not IsPostBack Then
Dim DBConn as SQLConnection
Dim DBCommand As SQLDataAdapter
Dim DSPageData as New DataSet
" DBConn = New SQLConnection("server=localhost;" _
" & "Initial Catalog=TT;" _
" & "User Id=sa;" _
" & "Password=yourpassword;")
DBConn = New SQLConnection("Data Source=whsql-v08.prod.mesa1.secureserver.net;Initial Catalog=DB_49907;User ID=nfexuser;Password="password";")
DBCommand = New SQLDataAdapter _
("Select LastName + ", " + FirstName " _
& "as EmpName, ID " _
& "From Employee " _
& "Order By LastName, FirstName", DBConn)
DBCommand.Fill(DSPageData, _
"Employees")
ddlEmps.DataSource = _
DSPageData.Tables("Employees").DefaultView
ddlEmps.DataBind()
End If
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Displaying SQL Server Data in a DropDownList Control</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:dropdownlist
id="ddlEmps"
datatextfield="EmpName"
datavaluefield="ID"
runat="server"
/>
</form>
</BODY>
</HTML>

</source>

==Retrieving SQL Server Data (VB.net)==



<source lang="csharp">
<%@ Page Language=VB Debug=true %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQLClient" %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
If Not IsPostBack Then
Dim DBConn as SQLConnection
Dim DBCommand As SQLDataAdapter
Dim DSPageData as New DataSet
" DBConn = New SQLConnection("server=localhost;" _
" & "Initial Catalog=TT;" _
" & "User Id=sa;" _
" & "Password=yourpassword;")
DBConn = New SQLConnection("Data Source=whsql-v08.prod.mesa1.secureserver.net;Initial Catalog=DB_49907;User ID=nfexuser;Password="password";")

DBCommand = New SQLDataAdapter _
("Select LastName + ", " + FirstName " _
& "as EmpName, ID " _
& "From Employee " _
& "Order By LastName, FirstName", DBConn)
DBCommand.Fill(DSPageData, _
"EmployeeNames")
DBCommand = New SQLDataAdapter _
("Select * from Employee", DBConn)
DBCommand.Fill(DSPageData, _
"EmployeesAll")
DBCommand = New SQLDataAdapter _
("Select LastName from Employee Where " _
& "Salary > 25000", DBConn)
DBCommand.Fill(DSPageData, _
"Emp3")
ddlEmps.DataSource = _
DSPageData.Tables("EmployeeNames").DefaultView
ddlEmps.DataBind()
dgEmps2.DataSource = _
DSPageData.Tables("EmployeesAll").DefaultView
dgEmps2.DataBind()
dgEmps3.DataSource = _
DSPageData.Tables("Emp3").DefaultView
dgEmps3.DataBind()
End If
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Retrieving SQL Server Data</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:dropdownlist
id="ddlEmps"
datatextfield="EmpName"
datavaluefield="ID"
runat="server"
/>
<BR><BR>
<asp:datagrid
id="dgEmps2"
runat="server"
autogeneratecolumns="True"
>
</asp:datagrid>
<BR><BR>
<asp:datagrid
id="dgEmps3"
runat="server"
autogeneratecolumns="True"
>
</asp:datagrid>
</form>
</BODY>
</HTML>

</source>

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ASP.Net/ADO.net Database/SQLDataAdapter - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия