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Mohammad Imran
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13.9k
How to open pdf file new tab in browser in ASP.NET C#
Aug 28 2020 11:59 PM
When select an item from dropdownlist it will open a file in new tab. There is no error. but when I click on link button,click event does not fire of link button.
Again dropdownlist SelectedIndexChanged event is fired when I click on link button.
When I select from dropdownlist , it open a file new tab but dows call javascript function "ResetTarget()"
<%@ Page Title=
"Home Page"
Language=
"C#"
MasterPageFile=
"~/Site.Master"
AutoEventWireup=
"true"
CodeFile=
"Default.aspx.cs"
Inherits=
"_Default"
%>
<asp:Content ID=
"BodyContent"
ContentPlaceHolderID=
"MainContent"
runat=
"server"
>
<script type=
"text/javascript"
>
function
ResetTarget()
{
alert(
'Yes'
);
document.forms[0].target =
''
;
}
function
SetTarget()
{
document.forms[0].target =
"_blank"
;
window.setTimeout(
"document.forms[0].target='';"
, 500);
}
</script>
<asp:HiddenField ID=
"hidCSRF"
runat=
"server"
Value=
""
/>
<table align=
"center"
class
=
"SubFormWOBG"
style=
"line-height: 25px; width: 100%"
>
<tr>
<td style=
"width: 40%"
>Application Code: </td>
<td style=
"width: 60%"
>
<asp:LinkButton ID=
"lnkApplicationCode"
runat=
"server"
CausesValidation=
"false"
OnClick=
"lnkApplicationCode_click"
></asp:LinkButton>
</td> </tr>
<tr runat=
"server"
id=
"MandatAtt"
>
<td>Mandatory Attchment:</td>
<td>
<asp:DropDownList runat=
"server"
ID=
"ddlAttachment"
AutoPostBack=
"true"
OnSelectedIndexChanged=
"ddlAttachment_SelectedIndexChanged"
> </asp:DropDownList>
</td>
</tr>
</table>
</asp:Content>
in c# file
protected
void
Page_Load(
object
sender, EventArgs e) {
if
(!IsPostBack) {
try
{
lnkApplicationCode.Text =
"135"
;
MandatAtt.Visible =
false
;
ddlAttachment.Attributes[
"onchange"
] =
"SetTarget();"
;
MandatAtt.Visible =
true
;
}
catch
(Exception) {
Response.Redirect(
"~/ErrorPage.aspx"
,
false
);
}
finally
{}
}
}
protected
void
ddlAttachment_SelectedIndexChanged(
object
sender, EventArgs e) {
try
{
string
[] arr = ddlAttachment.SelectedValue.ToString().Split(
','
);
int
int_attachmentCode = Convert.ToInt32(arr[0]);
int
int_attachmentSerialCode = Convert.ToInt32(arr[1]);
NOCAPInternalUtility.INDAppViewFiles(Convert.ToInt64(lnkApplicationCode.Text.Trim()), int_attachmentCode, int_attachmentSerialCode);
}
catch
(System.Threading.ThreadAbortException ex) {}
catch
(Exception) {
Response.Redirect(
"~/ErrorPage.aspx"
,
false
);
}
finally
{
hidCSRF.Value = Convert.ToString(System.Guid.NewGuid());
ViewState[
"CSRF"
] = hidCSRF.Value;
ScriptManager.RegisterStartupScript(
this
, GetType(),
"function"
,
"ResetTarget();"
,
false
);
}
}
protected
void
lnkApplicationCode_click(
object
sender, EventArgs e) {
hidCSRF.Value = Convert.ToString(System.Guid.NewGuid());
ViewState[
"CSRF"
] = hidCSRF.Value;
try
{
long
ApplicationCode = Convert.ToInt64(lnkApplicationCode.Text);
Session[
"ApplicationCode"
] = ApplicationCode;
}
catch
(Exception) {
Response.Redirect(
"~/ErrorPage.aspx"
,
false
);
}
}
Attachment:
SC.rar
Reply
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