ASP.NET(vb.net) & Upload Resize Insert to Database

Author: admin | Posted: 19-06-2010 | Category: ASP.NET(vb.net) & Image

ASP.NET(vb.net) & Upload Resize Insert to Database - The in this tutorial, you’ll learn and example scripts how to Upload and resize insert into database using by ASP.NET scripts.

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- ASP.NET(vb.net) & Upload Resize Insert to Database

Example

AspNetUploadResizeDB1.aspx

<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Imaging" %>
<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.OleDb"%>
<%@ Page Language="VB" %>
<script runat="server">
Dim objConn As OleDbConnection
Dim objCmd As OleDbCommand

Sub btnUpload_OnClick(sender As Object, e As EventArgs)

If Me.fiUpload.HasFile Then

Dim intWidth,intHeight As Integer
Dim UlFileName,NewFileName As String

intWidth =     100 '*** Fix Width ***'
'intHeight = 0   '*** If = 0 Auto Re-Cal Size ***'
intHeight = 120

UlFileName = "MyImages/" & fiUpload.FileName

'*** Save Images ***'
Me.fiUpload.SaveAs(Server.MapPath(UlFileName))

NewFileName = "MyImages/Thumbnail_" & fiUpload.FileName

Dim objGraphic As System.Drawing.Image = System.Drawing.Image.FromFile(Server.MapPath(UlFileName))

Dim objBitmap As Bitmap
'*** Calculate Height ***'
If intHeight > 0 Then
objBitmap = New Bitmap(objGraphic, intWidth, intHeight)
Else
If objGraphic.Width > intWidth Then
Dim ratio As Double = objGraphic.Height / objGraphic.Width
intHeight = ratio * intWidth
objBitmap = New Bitmap(objGraphic, intWidth, intHeight)
Else
objBitmap = New Bitmap(objGraphic)
End If
End If

'*** Save As  ***'
objBitmap.Save(Server.MapPath(NewFileName), objGraphic.RawFormat)

'*** Close ***'
objGraphic.Dispose()

'*** Nothing ***'
objBitmap = Nothing
objGraphic = Nothing

'*** Save to Database ***'
Dim objConn As OleDbConnection
Dim objCmd As OleDbCommand
Dim strConnString,strSQL As String

strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="&Server.MapPath("database/mydatabase.mdb")&";"
objConn = New OleDbConnection(strConnString)
objConn.Open()

strSQL = "INSERT INTO images (ImagesName,Thumbnails) " & _
"VALUES ('" & UlFileName & "','" & NewFileName & "')"

objCmd = New OleDbCommand()
With objCmd
.Connection = objConn
.CommandType = CommandType.Text
.CommandText = strSQL
End With
objCmd.ExecuteNonQuery()

objCmd = Nothing
objConn.Close()
objConn = Nothing

'*** Save to Database (End) ***'

'*** View Images ***'
Me.imgPicture.Visible = True
Me.imgPicture.ImageURL = NewFileName

'*** Hyperlink ***'
Me.hplLink1.Visible = True
Me.hplLink1.NavigateUrl = "AspNetUploadResizeDB2.aspx"

End IF

End Sub

</script>
<html>
<head>
<title>ShotDev.Com Tutorial</title>
</head>
<body>
<form id="form1" runat="server">
<asp:FileUpload id="fiUpload" runat="server"></asp:FileUpload>
<input id="btnUpload" type="button" OnServerClick="btnUpload_OnClick"  value="Upload" runat="server" />
<hr />
<asp:Image id="imgPicture" Visible="false" runat="server" /><br /><br />
<asp:HyperLink id="hplLink1" Visible = "false" runat="server">View files</asp:HyperLink>
</form>
</body>
</html>

AspNetUploadResizeDB2.aspx

<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.OleDb"%>
<%@ Page Language="VB" %>

<script runat="server">
Dim objConn As OleDbConnection
Dim objCmd As OleDbCommand

Sub Page_Load(sender As Object, e As EventArgs)
Dim strConnString As String
strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="&Server.MapPath("database/mydatabase.mdb")&";"
objConn = New OleDbConnection(strConnString)
objConn.Open()

BindData()
End Sub

Sub BindData()
Dim strSQL As String
strSQL = "SELECT * FROM images"

Dim dtReader As OleDbDataReader
objCmd = New OleDbCommand(strSQL, objConn)
dtReader = objCmd.ExecuteReader()

'*** BindData to DataList ***'
myDataList.DataSource = dtReader
myDataList.DataBind()

dtReader.Close()
dtReader = Nothing
End Sub

Sub Page_UnLoad()
objConn.Close()
objConn = Nothing
End Sub

</script>
<html>
<head>
<title>ShotDev.Com Tutorial</title>
</head>
<body>
<form id="form1" runat="server">
<asp:DataList id="myDataList" RepeatColumns="2" runat="server">
<HeaderTemplate>
<b>My Girl</b>
</HeaderTemplate>
<ItemTemplate>
<div style="width:100px" align="center">
<a href="<%#Container.DataItem("ImagesName")%>" target="blank">
<img src="<%#Container.DataItem("Thumbnails")%>" border="0">
</a>
</div>
</ItemTemplate>
<SeparatorTemplate>
<hr />
</SeparatorTemplate>
</asp:DataList>
</form>
</body>
</html>

Screenshot