Min kode ser ud som nedenstående, men hvordan laver jeg et check på om filtypen enten skal være jpg/gif og at filen max må fylde 51.200 bytes? Og hvis den ikke overholder disse kriterier, så skal den skrive en fejlbesked?
<% @ Page Language="C#" Trace="false" ContentType="text/html" Debug="True" ResponseEncoding="UTF-8" validateRequest="false" LCID="1030" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.Odbc" %>
<%@ Import Namespace="System.IO" %>
<script language="c#" runat="server">
void Page_Load()
{
if (!Page.IsPostBack)
{
String Username = Convert.ToString(Request.Form["username"]);
DisplayUsername.Text = Username.ToUpper();
string SenderUsernameValue = Convert.ToString(Request.Form["Senderusername"]);
SenderUsername.Text = Convert.ToString(SenderUsernameValue);
Int64 SenderIDValue = Convert.ToInt64(Request.Form["senderid"]);
SenderID.Text = Convert.ToString(SenderIDValue);
Int64 ReceiverIDValue = Convert.ToInt64(Request.Form["id"]);
ReceiverID.Text = Convert.ToString(ReceiverIDValue);
}
if (Page.IsPostBack){
string Header = TextBoxHeader.Text;
string Message = TextBoxMessage.Text;
string Link = TextBoxLink.Text;
DateTime Date = DateTime.Now;
string SenderIP = Request.ServerVariables["REMOTE_HOST"];
string LastID;
String Username = DisplayUsername.Text;
Int64 InsertSenderID = Convert.ToInt64(SenderID.Text);
Int64 InsertReceiverID = Convert.ToInt64(ReceiverID.Text);
string InsertSenderUsername = Convert.ToString(SenderUsername.Text);
if (File1.PostedFile != null) //Checking for valid file
{
// Since the PostedFile.FileNameFileName gives the entire path we use Substring function to rip of the filename alone.
string StrFileName = File1.PostedFile.FileName.Substring(File1.PostedFile.FileName.LastIndexOf("\\") + 1);
string StrFileType = File1.PostedFile.ContentType;
int IntFileSize = File1.PostedFile.ContentLength;
//Checking for the length of the file. If length is 0 then file is not uploaded.
if (IntFileSize <= 0)
Response.Write(" <font color='Red' size='2'>Uploading of file " + StrFileName + " failed </font>");
else
{
File1.PostedFile.SaveAs(Server.MapPath("/Pic/Upload/message/" + StrFileName));
Response.Write("<font color='green' size='2'>Your file " + StrFileName + " of type " + StrFileType + " and size " + IntFileSize.ToString() + " bytes was uploaded successfully</font>");
}
}
}
}
private static string GetConnection()
{
return "DRIVER={MySQL ODBC 3.51 Driver};Server=127.0.0.1;Database=xxxxx;Uid=dbuser;pwd=xxxxx;option=3";
}
</script>
<html>
<body>
<form id="Form1" name="Form" method="post" enctype="multipart/form-data" runat="server">
<asp:Label Visible=false ID="SenderID" runat="server" />
<asp:Label Visible=false ID="ReceiverID" runat="server" />
<asp:Label Visible=false ID="SenderUsername" runat="server" />
<TABLE ALIGN=center BORDER=0 CELLPADDING=2 CELLSPACING=2 HEIGHT=100% WIDTH=100%>
<TR>
<TD VALIGN=top>
<TABLE ALIGN=center BORDER=0 CELLPADDING=0 CELLSPACING=0 CLASS=td VALIGN=top WIDTH=100%>
<TR>
<TD HEIGHT=10></TD>
</TR>
<TR>
<TD ALIGN=left CLASS=td_bold valign="middle">SEND BESKED TIL BRUGEREN <span class="td_orange"><b><asp:Label ID="DisplayUsername" runat="server" /></b></span> <img src="/pic/graphic/icon_send_besked.gif" border="0" width="20" height="12" /></TD>
</TR>
<TR>
<TD HEIGHT=4></TD>
</TR>
<TR>
<TD BGCOLOR=#EEEEEE HEIGHT=1></TD>
</TR>
<TR>
<TD HEIGHT=8></TD>
</TR>
<TR>
<TD CLASS=table_site>
<TABLE ALIGN=left BORDER=0 CELLPADDING=2 CELLSPACING=0 CLASS=td VALIGN=top WIDTH=100%>
<COLGROUP>
<COL ALIGN=center VALIGN=top WIDTH=15>
<COL ALIGN=left VALIGN=middle WIDTH=70>
<COL ALIGN=left VALIGN=middle WIDTH=150>
<COL ALIGN=center VALIGN=top WIDTH="%">
</COLGROUP>
<TR>
<TD HEIGHT=5></TD>
</TR>
<TR>
<TD ALIGN=center CLASS=td_orange VALIGN="top">*</TD>
<TD valign="top"><b><asp:Label ID="LabelHeader" runat="server" Text="Overskrift:"></asp:Label></b></TD>
<TD>
<asp:TextBox ID="TextBoxHeader" runat="server" CssClass="input" Width="262"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="TextBoxHeader" Display="Dynamic" errormessage="<br />Du skal indtaste en overskrift" runat=server/>
</TD>
</TR>
<TR>
<TD ALIGN=center CLASS=td_orange VALIGN=top>*</TD>
<TD valign="top"><b><asp:Label ID="LabelBesked" runat="server" Text="Besked:"></asp:Label></b></TD>
<TD>
<asp:TextBox id="TextBoxMessage" runat="server" CssClass="input" rows="10" textmode="multiline" Columns="40" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" ControlToValidate="TextBoxMessage" Display="Dynamic" errormessage="<br />Du skal indtaste en besked" runat=server/>
</TD>
</TR>
<TR>
<TD ALIGN=center CLASS=td_orange VALIGN=middle></TD>
<TD valign="middle"><b><asp:Label ID="LabelPicture" runat="server" Text="Vedhæft billede:"></asp:Label></b></TD>
<TD><input id="File1" name="File1" type="file" runat="server" class="input" size=26></TD>
</TR>
<TR>
<TD ALIGN=center CLASS=td_orange VALIGN=middle></TD>
<TD valign="middle"><b><asp:Label ID="LabelLink" runat="server" Text="Evt. link:"></asp:Label></b></TD>
<TD><asp:TextBox ID="TextBoxLink" runat="server" CssClass="input" Width="262"></asp:TextBox></TD>
</TR>
<TR>
<TD><IMG BORDER=0 HEIGHT=0 SRC=/pic/0.gif WIDTH=15></TD>
<TD><IMG BORDER=0 HEIGHT=0 SRC=/pic/0.gif WIDTH=70></TD>
<TD><IMG BORDER=0 HEIGHT=0 SRC=/pic/0.gif WIDTH=150></TD>
<TD><IMG BORDER=0 HEIGHT=0 SRC=/pic/0.gif WIDTH="%"></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
<TD HEIGHT=25> </TD>
</TR>
<TR>
<TD align="center"><asp:ImageButton ID="Button1" runat="server" CssClass="input" ImageUrl="/pic/graphic/button_send.gif" BorderStyle="None" /></TD>
</TR>
<TR>
<TD HEIGHT=25></TD>
</TR>
</TABLE>
</TD>
</TR>
</TABLE>
</form>
</body>
</html>
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