How to upload images!

First:

Use the upload tool included in 2005 to upload:

Public static string uploadimage (system. Web. UI. webcontrols. fileupload filebox, string savepath)
{
Datetime dattime = system. datetime. now;
String filename = filebox. filename; // file name

String extension = ""; // File Extension

String strtemp = "";
String relativepath = ""; // relative path
String filepath = ""; // physical path

If (filebox. hasfile)
{
Extension = path. getextension (filename );
Strtemp = dattime. tow.datestring (). Replace ("-","");
Filename = dattime. tolongtimestring (). Replace (":", "") + dattime. millisecond + (new random (). Next (100000) + extension;
Filename = strtemp + filename;
Int filesize = filebox. postedfile. contentlength;
If (filesize> 50000)
{
System. Web. httpcontext. Current. response. Write ("<script language = JavaScript> window. Alert ('the file exceeds 50 kb and cannot be uploaded! ') </SCRIPT> ");
Return relativepath;
}
Relativepath = "~ /Uploadfiles/"+ savepath +"/"+ strtemp + "/";
Filepath = system. Web. httpcontext. Current. server. mappath (relativepath );
Createdirectory (filepath );
Filepath + = filename;
Relativepath = "/uploadfiles/" + savepath + "/" + strtemp + "/";
Relativepath + = filename;
Filebox. saveas (filepath );
// System. Web. httpcontext. Current. response. Write ("<script language = JavaScript> window. Alert ('uploaded successfully') </SCRIPT> ");
Return relativepath;
}
Else
{
// System. Web. httpcontext. Current. response. Write ("<script language = JavaScript> window. Alert ('upload failed') </SCRIPT> ");
Return relativepath;
}

}

 

This is another method:

This method is used to upload images in freetextbox: (refer to uploading images)

If (uploadfile. postedfile. filename. Trim ()! = "")
{
If (isvalidfiletype (uploadfile. postedfile. filename ))
{
Try
{
String uploadfilename = "";
String uploadfiledestination = "";
String filename = "";
Int PPP = 0;

Filename = (datetime. Now. tostring (). Replace (":","");
Filename = filename. Replace ("","");
Filename = filename. Replace ("-","");

Uploadfilename = uploadfile. postedfile. filename;
PPP = uploadfilename. lastindexof (".");
Uploadfilename = uploadfilename. substring (PPP, uploadfilename. Length-PPP );
Filename = filename + uploadfilename;


Uploadfiledestination = httpcontext. Current. Request. physicalapplicationpath;
Uploadfiledestination + = currentimagesfolder. value;
Uploadfiledestination + = "//";
Uploadfile. postedfile. saveas (uploadfiledestination + filename );

String Urrl = server. mappath ("../images/") + filename;
Double width = 0;
Double Height = 0;
System. Drawing. Bitmap imgobj = new Bitmap (Urrl );
Width = imgobj. width;
Height = imgobj. height;

Double K; // Jin Ru 2005.5.11
If (width! = 0) & (height! = 0 ))
{
K = convert. todouble (width/height );

If (k> = 1)
{
If (width >=750)
{
Length = 750;
Height = width/K;
}
}
Else
{
If (Height & gt; = 750)
{
Height = 750;
Width = K * height;
}
}
}

String imgurl = @ "../aspnetforums/images/" + filename;
This. IW. value = width. tostring ();
This. ih. value = height. tostring ();
This. IP. value = imgurl;
Resultsmessage. Text = uploadsuccessmessage;
}
Catch
{
Resultsmessage. Text = uploadfailuremessage;
}
}
Else
{
Resultsmessage. Text = invalidfiletypemessage;
}
}

The width and height values are used to return values and display the size in the editing box.

Function returnimage (imagename, width, height) {var imgar = new array (); imgar ["FILENAME"] = imagename; imgar ["width"] = width; imgar ["height"] = height; window. parent. returnvalue = imgar; window. parent. close ();}

(First, width and height are respectively paid to this. form. elements ['IP']. value, this. form. elements ['aw']. value, this. form. elements ['ih ']. value and then "OK" to the receiving page)

<Input id = "enter" onclick = "returnimage (this. form. elements ['IP']. value, this. form. elements ['aw']. value, this. form. elements ['ih ']. value );"
Type = "button" value = "OK">