I am using asyncupload control of AjaxControlToolkit and I want to check the file to be uploding is already exists or not on server. How we can do this? Please help me out.
<!-- Client side code for control-->
<script>
function uploadError(sender, args) {
//document.getElementById('lblStatus').innerText = args.get_fileName(), "<span style='color:red;'>" + args.get_errorMessage() + "</span>";
}
function StartUpload(sender, args) {
var nodeSelectedText = document.getElementById('<%=lblFileLocation1.ClientID%>').innerHTML;
if (nodeSelectedText == "") {
$("#msgMissingSelection").dialog("open");
args.set_cancel(true);
}
else {
return true;
}
}
function UploadComplete(sender, args) {
var hdnFieldVal = document.getElementById('<%=hdnField.ClientID%>');
if(hdnFieldVal.value == "1")
{
$("#msgFileUploadExists").dialog("open");
}
else
{
$("#msgFileUpload").dialog("open");
}
}
</script>
<!-- Control Code in aspx-->
<tr>
<td></td>
<td>
<cc1:AsyncFileUpload ID="FileUpload2" Width="265px" runat="server"
OnClientUploadError="uploadError"
OnClientUploadStarted="StartUpload"
OnClientUploadComplete="UploadComplete"
CompleteBackColor="Lime" UploaderStyle="Modern"
ErrorBackColor="Red"
ThrobberID="Throbber"
onuploadedcomplete="AsyncFileUpload1_UploadedComplete"
UploadingBackColor="#66CCFF" />
<asp:Label ID="Throbber" runat="server" Style="display: none">
<img src="../../images/indicator.gif" align="absmiddle" alt="loading" />
</asp:Label>
<asp:HiddenField ID="hdnField" runat="server" value=""/>
</td>
</tr>
//.CS Code for ayncupload control
protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
string filePath="C:\Documents\temp.txt"
if(File.Exists(filePath))
{
hdnField.value="1";//Not able to access this value
}
}
Thanks!!
you just need to set your hidden field value at client side script.
See I have made little changes in your server side code:
protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
string filePath = "C:\\Documents\\temp.txt";
string hiddenValue = "0";
if (File.Exists(filePath))
{
hiddenValue = "1";
}
//This script will set required value for hidden field.
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "SetHiddenField", String.Format("top.$get('{0}').value = '{1}'", hdnField.ClientID, hiddenValue), true);
}
Make changes in your script location as follow:
<ajaxToolkit:ToolkitScriptManager runat="Server" EnablePartialRendering="true" ID="ScriptManager1" />
<script>
function uploadError(sender, args) {
//document.getElementById('lblStatus').innerText = args.get_fileName(), "<span style='color:red;'>" + args.get_errorMessage() + "</span>";
}
function StartUpload(sender, args) {
var nodeSelectedText = document.getElementById('<%=lblFileLocation1.ClientID%>').innerHTML;
if (nodeSelectedText == "") {
$("#msgMissingSelection").dialog("open");
args.set_cancel(true);
}
else {
return true;
}
}
function UploadComplete(sender, args) {
var hdnFieldVal = document.getElementById('<%=hdnField.ClientID%>');
if(hdnFieldVal.value == "1")
{
$("#msgFileUploadExists").dialog("open");
}
else
{
$("#msgFileUpload").dialog("open");
}
}
</script>
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