Uploading An Image And Saving Itz Path In Sql !!!! (plz)
Nov 1, 2006
well, i'm using vs2005 and sql server 2000.
i've got this snippet for uploading an image and creating itz thumbnail and also saving the thumbnail and the original image in a folder.
but i also want the path of the image and the thumbnail to be stored in sql 2000 database, instead of saving the images in sql.
can some one plz provide me the way.
thanx in advance.
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Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
' Initialize variables
Dim sSavePath As String
Dim sThumbExtension As String
Dim intThumbWidth As Integer
Dim intThumbHeight As Integer
' Set constant values
sSavePath = ".Image"
sThumbExtension = "_thumb"
intThumbWidth = 160
intThumbHeight = 120
' If file field isn’t empty
If Not fileUpEx.PostedFile Is Nothing Then
' Check file size (mustn’t be 0)
Dim myFile As HttpPostedFile = fileUpEx.PostedFile
Dim nFileLen As Integer = myFile.ContentLength
If nFileLen = 0 Then
lblStatus.Text = "No file was uploaded."
Return
End If
' Check file extension (It must be .JPG)
If System.IO.Path.GetExtension(myFile.FileName).ToLower() = ".jpg" Then
' Read file into a data stream
Dim myData() As Byte = New Byte(nFileLen) {}
myFile.InputStream.Read(myData, 0, nFileLen)
' Make sure a duplicate file doesn’t exist. If it does, keep on appending an
' incremental numeric until it is unique
Dim sFilename As String = System.IO.Path.GetFileName(myFile.FileName)
Dim file_append As Integer = 0
While System.IO.File.Exists(Server.MapPath(sSavePath + sFilename))
file_append = file_append + 1
sFilename = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) + file_append.ToString() + ".jpg"
End While
' Save the stream to disk
Dim NewFile As System.IO.FileStream = New System.IO.FileStream(Server.MapPath(sSavePath + sFilename), System.IO.FileMode.Create)
NewFile.Write(myData, 0, myData.Length)
NewFile.Close()
' Check whether the file is really a JPEG by opening it
Dim myCallBack As System.Drawing.Image.GetThumbnailImageAbort = New System.Drawing.Image.GetThumbnailImageAbort(AddressOf ThumbnailCallback)
Dim myBitmap As Drawing.Bitmap
Try
myBitmap = New Drawing.Bitmap(Server.MapPath(sSavePath + sFilename))
' If jpg file is a jpeg, create a thumbnail filename that is unique.
file_append = 0
Dim sThumbFile As String = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) + sThumbExtension + ".jpg"
While System.IO.File.Exists(Server.MapPath(sSavePath + sThumbFile))
file_append = file_append + 1
sThumbFile = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) + file_append.ToString + sThumbExtension + ".jpg"
End While
' Save thumbnail and output it onto the webpage
Dim myThumbnail As System.Drawing.Image = myBitmap.GetThumbnailImage(intThumbWidth, intThumbHeight, myCallBack, IntPtr.Zero)
myThumbnail.Save(Server.MapPath(sSavePath + sThumbFile))
imgPicture.ImageUrl = sSavePath + sThumbFile
' Displaying success information
lblStatus.Text = "Image uploaded successfully!"
' Destroy objects
myThumbnail.Dispose()
myBitmap.Dispose()
Catch errArgument As ArgumentException
System.IO.File.Delete(Server.MapPath(sSavePath + sFilename))
End Try
Else
lblStatus.Text = "The file must have an extension of JPG or GIF"
Return
End If
End Sub
Public Function ThumbnailCallback() As Boolean
Return False
End Function
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Protected Sub btnupload_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim intLength As Integer
Dim arrContent As Byte()
If FileUpload.PostedFile Is Nothing Then
Lblstatus.Text = "No file specified."
Exit Sub
Else
Dim fileName As String = FileUpload.PostedFile.FileName
Dim ext As String = fileName.Substring(fileName.LastIndexOf("."))
ext = ext.ToLower
Dim imgType = FileUpload.PostedFile.ContentType
If ext = ".jpg" Then
ElseIf ext = ".bmp" Then
ElseIf ext = ".gif" Then
ElseIf ext = "jpg" Then
ElseIf ext = "bmp" Then
ElseIf ext = "gif" Then
Else
Lblstatus.Text = "Only gif, bmp, or jpg format files supported."
Exit Sub
End If
intLength = Convert.ToInt32(FileUpload.PostedFile.InputStream.Length)
ReDim arrContent(intLength)
FileUpload.PostedFile.InputStream.Read(arrContent, 0, intLength)
If Doc2SQLServer(txtTitle.Text.Trim, arrContent, intLength, imgType) = True Then
Lblstatus.Text = "Image uploaded successfully."
Else
Lblstatus.Text = "An error occured while uploading Image... Please try again."
End If
End If
End Sub
Protected Function Doc2SQLServer(ByVal title As String, ByVal Content As Byte(), ByVal Length As Integer, ByVal strType As String) As Boolean
Try
Dim cnn As Data.SqlClient.SqlConnection
Dim cmd As Data.SqlClient.SqlCommand
Dim param As Data.SqlClient.SqlParameter
Dim strSQL As String
strSQL = "Insert Into Images(imgData,imgTitle,imgType,imgLength,incident_id) Values(@content,@title,@type,@length,@incident_id)"
Dim connString As String = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|safetydata.mdf;Integrated Security=True;User Instance=True"
cnn = New Data.SqlClient.SqlConnection(connString)
cmd = New Data.SqlClient.SqlCommand(strSQL, cnn)
param = New Data.SqlClient.SqlParameter("@content", Data.SqlDbType.Image)
param.Value = Content
'cmd.Parameters.AddWithValue(param)
cmd.Parameters.AddWithValue("@content", Content)
param = New Data.SqlClient.SqlParameter("@title", Data.SqlDbType.VarChar)
param.Value = title
cmd.Parameters.Add(param)
param = New Data.SqlClient.SqlParameter("@type", Data.SqlDbType.VarChar)
param.Value = strType
cmd.Parameters.Add(param)
param = New Data.SqlClient.SqlParameter("@length", Data.SqlDbType.BigInt)
param.Value = Length
cmd.Parameters.Add(param)
cmd.Parameters.AddWithValue("@incident_id", id.Text)
cnn.Open()
cmd.ExecuteNonQuery()
cnn.Close()
Return True
Catch ex As Exception
Return False
End Try
End Function
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I am using the 3-tiered architecture design (presentation, business laws, and data acess layers). I am stuck on how to send the image the user selects in the upload file control to the BLL and then to the DAL because the DAL does all the inserts into the database. I would like to be able to check the file type in the BLL to make sure the file being uploaded is indeed a picture. Is there a way I can send the location of the file to the BLL, check the filetype, then upload the file and have the DAL insert the image into the database? I have seen examples where people use streams to upload the file directly from their presentation layer, but I would like to keep everything seperated in the three classes if possible. I also wasn't sure what variable type the image would be in the function in the BLL that receive the image from the PL. If there are any examples or tips anyone can give me that would be appreciated.
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hi all,
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using the following vb.net code:
'Dim sel2 As String
'Dim myCom As SqlCommand
'Dim conn As New SqlConnection
'Dim drr As SqlDataReader
'Dim image As System.Drawing.Image
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'End If
'conn.Close()
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thanks for your help.
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Hi,
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any help will appreciated....
Regards
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<asp:SqlDataSource ID="SqlDataSource2"
runat="server" ConnectionString="<%$ ConnectionStrings:IMMOASPNETDBConnectionString %>"
DeleteCommand="DELETE FROM aspnet_BuyGroundImages WHERE (BuyGroundID = @Original_BuyGroundID)"
InsertCommand="AddImage" SelectCommand="SELECT BuyGroundID, BuyGroundDescription, Image1, Image2, Image3, Image4, Image5, OptionOn, Sold, Price FROM aspnet_BuyGroundImages" UpdateCommand="UPDATE aspnet_BuyGroundImages SET BuyGroundDescription = @BuyGroundDescription, Image1 = @Image1, Image2 = @Image2, Image3 = @Image3, Image4 = @Image4, Image5 = @Image5, OptionOn = @OptionOn, Sold = @Sold, Price = @Price WHERE (BuyGroundID = @original_BuyGroundID)" InsertCommandType="StoredProcedure">
<DeleteParameters>
<asp:Parameter Name="Original_BuyGroundID" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="BuyGroundDescription" />
<asp:Parameter Name="Image1" Type="Byte" />
<asp:Parameter Name="Image2" Type="Byte" />
<asp:Parameter Name="Image3" Type="Byte" />
<asp:Parameter Name="Image4" Type="Byte" />
<asp:Parameter Name="Image5" Type="Byte" />
<asp:Parameter Name="OptionOn" />
<asp:Parameter Name="Sold" />
<asp:Parameter Name="Price" />
<asp:Parameter Name="original_BuyGroundID" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="BuyGroundID" Type="Int32" />
<asp:Parameter Name="BuyGroundDescription" />
<asp:Parameter Name="Image1" />
<asp:Parameter Name="Image2" />
<asp:Parameter Name="Image3" />
<asp:Parameter Name="Image4" />
<asp:Parameter Name="Image5" />
<asp:Parameter Name="OptionOn" />
<asp:Parameter Name="Sold" />
<asp:Parameter Name="Price" />
<asp:Parameter Name="LastUpdated" Type="DateTime" />
</InsertParameters>
</asp:SqlDataSource>
<asp:DetailsView ID="DetailsView1" runat="server" AllowPaging="True" AutoGenerateRows="False"
DataKeyNames="BuyGroundID" DataSourceID="SqlDataSource2" Height="50px" Width="125px" BackColor="White" BorderColor="#336666" BorderStyle="Double" BorderWidth="3px" CellPadding="4" GridLines="Horizontal">
<Fields>
<asp:BoundField DataField="BuyGroundID" HeaderText="BuyGroundID" InsertVisible="False"
ReadOnly="True" SortExpression="BuyGroundID" />
<asp:BoundField DataField="BuyGroundDescription" HeaderText="BuyGroundDescription"
SortExpression="BuyGroundDescription" />
<asp:TemplateField HeaderText="Image1" SortExpression="Image1">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("Image1") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:FileUpload ID="FileUpload1" runat="server" />
<!-- <input id="File1" type="file" language="javascript" runat="server" />
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Image1") %>'></asp:TextBox> -->
</EditItemTemplate>
<InsertItemTemplate>
<input id="File2" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Image1") %>'></asp:TextBox> -->
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Image2" SortExpression="Image2">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("Image2") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<input id="File3" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Image2") %>'></asp:TextBox> -->
</EditItemTemplate>
<InsertItemTemplate>
<input id="File4" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Image2") %>'></asp:TextBox> -->
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Image3" SortExpression="Image3">
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("Image3") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<input id="File5" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Image3") %>'></asp:TextBox> -->
</EditItemTemplate>
<InsertItemTemplate>
<input id="File6" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Image3") %>'></asp:TextBox> -->
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Image4" SortExpression="Image4">
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%# Bind("Image4") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<input id="File7" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Image4") %>'></asp:TextBox> -->
</EditItemTemplate>
<InsertItemTemplate>
<input id="File8" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Image4") %>'></asp:TextBox> -->
</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Image5" SortExpression="Image5">
<ItemTemplate>
<asp:Label ID="Label5" runat="server" Text='<%# Bind("Image5") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<input id="File9" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("Image5") %>'></asp:TextBox> -->
</EditItemTemplate>
<InsertItemTemplate>
<input id="File10" type="file" language="javascript" runat="server" />
<!-- <asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("Image5") %>'></asp:TextBox> -->
</InsertItemTemplate>
</asp:TemplateField>
<asp:CheckBoxField DataField="OptionOn" HeaderText="OptionOn" SortExpression="OptionOn" />
<asp:CheckBoxField DataField="Sold" HeaderText="Sold" SortExpression="Sold" />
<asp:BoundField DataField="Price" HeaderText="Price" SortExpression="Price" />
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" ShowInsertButton="True" ButtonType="Button" />
</Fields>
<FooterStyle BackColor="White" ForeColor="#333333" />
<EditRowStyle BackColor="#339966" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="White" ForeColor="#333333" />
<PagerStyle BackColor="#336666" ForeColor="White" HorizontalAlign="Center" />
<HeaderStyle BackColor="#336666" Font-Bold="True" ForeColor="White" />
</asp:DetailsView>Code behind page:
Imports System.IO
Imports System.Data
Imports System.Data.SqlClient
Partial Class gronden
Inherits System.Web.UI.Page
Protected Sub DetailsView1_ItemUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewUpdateEventArgs) Handles DetailsView1.ItemUpdating
Try
'copy file data into record?
Dim upload As FileUpload = CType(Me.DetailsView1.FindControl("FileUpload1"), FileUpload)
If Not upload Is Nothing Then
If upload.PostedFile.FileName <> "" Then
'copy file to a byte array in memory
Dim data(upload.PostedFile.ContentLength) As Byte
upload.PostedFile.InputStream.Read(data, 0, upload.PostedFile.ContentLength)
'get filename part only
Dim filename As String
Dim tmp As Integer = upload.PostedFile.FileName.LastIndexOf("")
If tmp >= 0 Then
'strip directory part
filename = upload.PostedFile.FileName.Substring(tmp + 1, _
upload.PostedFile.FileName.Length - tmp - 1)
Else
filename = upload.PostedFile.FileName
End If
'save this to the fields
e.NewValues("Image1") = data
e.NewValues("FileName") = filename
e.NewValues("Contenttype") = upload.PostedFile.ContentType
End If
End If
Catch Ex As Exception
Response.Write(Ex.StackTrace)
End Try
End Sub
End Class
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Feb 27, 2006
I have yet to create a query string that works and it is beginning to drive me insane. I am trying to allow a user to upload a word document into my SQL 2000 database. However I always seem to get an error when it comes time to insert the file. The table has 5 fields memnumber, papertitle, and file type are all varchar. Length is an integer and actual_file is of type image. Here is my string
command = "INSERT INTO resumes (memnumber, papertitle, length, filetype, actual_file) VALUES ( '" & TextBox1.Text & "', '" & rightname & "', " & length & ", '" & type & "', " & filer & ")"
I can't tell you how many different versions of this string I have tried to run with none of them working, so the errors I have gotten have been varied. Most of them tell me either I can't use the & operator with file type image or that string or binary data would be truncated.
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Apr 11, 2001
We are building an ASP application with SQL Server 2000 as a back end.
What is the best way to upload images to the server?
Thank you,
Anastasia.
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