c# - System.IO.Path.GetExtension returns null in ASP.NET

protected void Post_Click(object sender, EventArgs e)

{

string fileExt = System.IO.Path.GetExtension(FileUpload1.FileName);

//string ext = System.IO.Path.GetExtension(this.File1.PostedFile.FileName);

if (fileExt == ".jpg" || fileExt == ".jpeg"||fileExt=="")

{

if (FileUpload1.HasFile && TextBoxPost.Text != "")

{

FileUpload1.SaveAs(Server.MapPath("~/BlogPic/" + FileUpload1.FileName));

b.Blog_Pic = "~/BlogPic/" + FileUpload1.FileName;

b.Blog = TextBoxPost.Text;

b.User_Id = Convert.ToInt32(Session["Id"]);

b.Date1 = DateTime.Now.Date;

b.Time1 = DateTime.Now.ToString("h:mm:ss");

cs.da.BlogTables.InsertOnSubmit(b);

cs.da.SubmitChanges();

TextBoxPost.Text = "";

Response.Redirect(Request.Url.AbsoluteUri); //prevent to reinsert data after refresh data

}

else

if (FileUpload1.HasFile && TextBoxPost.Text == "")

{

FileUpload1.SaveAs(Server.MapPath("~/BlogPic/" + FileUpload1.FileName));

b.Blog_Pic = "~/BlogPic/" + FileUpload1.FileName;

b.Blog = TextBoxPost.Text;

b.User_Id = Convert.ToInt32(Session["Id"]);

b.Date1 = DateTime.Now.Date;

b.Time1 = DateTime.Now.ToString("h:mm:ss");

cs.da.BlogTables.InsertOnSubmit(b);

cs.da.SubmitChanges();

TextBoxPost.Text = "";

Response.Redirect(Request.Url.AbsoluteUri); //prevent to reinsert data after refresh data

}

else if (TextBoxPost.Text != "" && FileUpload1.HasFile == false)

{

b.Blog_Pic = "NoPic" + FileUpload1.FileName;

b.Blog = TextBoxPost.Text;

b.User_Id = Convert.ToInt32(Session["Id"]);

b.Date1 = DateTime.Now.Date;

b.Time1 = DateTime.Now.ToString("h:mm:ss");

cs.da.BlogTables.InsertOnSubmit(b);

cs.da.SubmitChanges();

Response.Write("");

TextBoxPost.Text = "";

Response.Redirect(Request.Url.AbsoluteUri);//prevent to reinsert data after refresh data

}

else if (TextBoxPost.Text == "" && FileUpload1.HasFile == false)

{

Response.Write("");

}

else

{

Response.Write("");

}

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Abhilash J A9y ago
Accepted answer
Please post your code here.
0
Gaurav Raj9y ago
i post my code can somebody reply me
0
Gaurav Raj9y ago
protected void Post_Click(object sender, EventArgs e)
{
string fileExt = System.IO.Path.GetExtension(FileUpload1.FileName);
//string ext = System.IO.Path.GetExtension(this.File1.PostedFile.FileName);
if (fileExt == ".jpg" || fileExt == ".jpeg"||fileExt=="")
{
if (FileUpload1.HasFile && TextBoxPost.Text != "")
{
FileUpload1.SaveAs(Server.MapPath("~/BlogPic/" + FileUpload1.FileName));
b.Blog_Pic = "~/BlogPic/" + FileUpload1.FileName;
b.Blog = TextBoxPost.Text;
b.User_Id = Convert.ToInt32(Session["Id"]);
b.Date1 = DateTime.Now.Date;
b.Time1 = DateTime.Now.ToString("h:mm:ss");
cs.da.BlogTables.InsertOnSubmit(b);
cs.da.SubmitChanges();
TextBoxPost.Text = "";
Response.Redirect(Request.Url.AbsoluteUri); //prevent to reinsert data after refresh data
}
else
if (FileUpload1.HasFile && TextBoxPost.Text == "")
{
FileUpload1.SaveAs(Server.MapPath("~/BlogPic/" + FileUpload1.FileName));
b.Blog_Pic = "~/BlogPic/" + FileUpload1.FileName;
b.Blog = TextBoxPost.Text;
b.User_Id = Convert.ToInt32(Session["Id"]);
b.Date1 = DateTime.Now.Date;
b.Time1 = DateTime.Now.ToString("h:mm:ss");
cs.da.BlogTables.InsertOnSubmit(b);
cs.da.SubmitChanges();
TextBoxPost.Text = "";
Response.Redirect(Request.Url.AbsoluteUri); //prevent to reinsert data after refresh data
}
else if (TextBoxPost.Text != "" && FileUpload1.HasFile == false)
{
b.Blog_Pic = "NoPic" + FileUpload1.FileName;
b.Blog = TextBoxPost.Text;
b.User_Id = Convert.ToInt32(Session["Id"]);
b.Date1 = DateTime.Now.Date;
b.Time1 = DateTime.Now.ToString("h:mm:ss");
cs.da.BlogTables.InsertOnSubmit(b);
cs.da.SubmitChanges();
Response.Write("");
TextBoxPost.Text = "";
Response.Redirect(Request.Url.AbsoluteUri);//prevent to reinsert data after refresh data
}
else if (TextBoxPost.Text == "" && FileUpload1.HasFile == false)
{
Response.Write("");
}
}
else
{
Response.Write("");
}
}
0
Abhilash J A9y ago
I think, Get extension method returns a extension of file. check following code sample
string s = System.IO.Path.GetExtension("file1.aspx");
Or
So check if (file != null && file.FileName != null) first before proceeding furthure.
0