how to open a new window/tab in asp:Button

Question

User1046245955 posted

how to open a new window/tab using c# .net

here's my code:

.aspx

<asp:Button ID="bttnpdf" runat="server" Text="<%$ Resources:LocalizedResources, View %>" Width="120px" CssClass="btn yellow pull-left" OnClick="bttnpdf_Click" />

code behind:

protected void bttnpdf_Click(object sender, EventArgs e)
{

string mattach = Session["atta"].ToString();

string FilePath = @"http://server/FileAttachment/" + mattach;

WebClient User = new WebClient();
Byte[] FileBuffer = User.DownloadData(FilePath);
if (FileBuffer != null)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", FileBuffer.Length.ToString());
Response.BinaryWrite(FileBuffer);
}
}

Answer 1

User283571144 posted

Hi paminchever,

how to open a new window/tab using c# .net

According to your description and codes, I couldn't understand your requirement clearly.

I found your codes is used to download the PDF file from another path.

If you want to open the PDF file in the new windows, I suggest you could refer to below codes:

        protected void bttnpdf_Click(object sender, EventArgs e)
        {
            string FilePath = @"http://server/FileAttachment/" + "a";

            Response.Redirect(FilePath);
        }

If I misunderstand your requirement, please feel free to let me know.

Best Regards,

Brando