I found an example but with a gridview, can anyone help me to use it with RadGrid???
protected void lnkDownload_Click(object sender, EventArgs e)
{
LinkButton lnkbtn = sender as LinkButton;
GridViewRow gvrow = lnkbtn.NamingContainer as GridViewRow;
string filePath = gvDetails.DataKeys[gvrow.RowIndex].Value.ToString();
Response.ContentType = "application/vnd.ms-excel, application/pdf, application/vnd.ms-excel";
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
Response.TransmitFile(Server.MapPath(filePath));
Response.End();
}
where gvDetails is a Gridview.
Thanks.
protected void lnkDownload_Click(object sender, EventArgs e)
{
LinkButton lnkbtn = sender as LinkButton;
GridViewRow gvrow = lnkbtn.NamingContainer as GridViewRow;
string filePath = gvDetails.DataKeys[gvrow.RowIndex].Value.ToString();
Response.ContentType = "application/vnd.ms-excel, application/pdf, application/vnd.ms-excel";
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
Response.TransmitFile(Server.MapPath(filePath));
Response.End();
}
where gvDetails is a Gridview.
Thanks.
4 Answers, 1 is accepted
0
Accepted

Princy
Top achievements
Rank 2
answered on 07 Dec 2012, 04:11 AM
Hi,
Please try the following code snippet.
C#:
Thanks,
Princy.
Please try the following code snippet.
C#:
protected
void
lnkDownload_Click(
object
sender, EventArgs e)
{
LinkButton lnkbtn = sender
as
LinkButton;
GridDataItem item = (GridDataItem)lnkbtn.NamingContainer;
string
filePath = item.OwnerTableView.DataKeyValues[item.ItemIndex][
"DataKeyName"
].ToString();
Response.ContentType =
"application/vnd.ms-excel, application/pdf, application/vnd.ms-excel"
;
Response.AddHeader(
"Content-Disposition"
,
"attachment;filename=\""
+ filePath +
"\""
);
Response.TransmitFile(Server.MapPath(filePath));
Response.End();
}
Thanks,
Princy.
0

Jaime
Top achievements
Rank 1
answered on 07 Dec 2012, 04:36 AM
Thanks a lot!!!!
0

Mayur
Top achievements
Rank 1
answered on 20 Dec 2013, 06:08 AM
Hi Princy,
Hope you would be doing well. I am having an issue in TelerikRad Grid. I am having a TelerikRadAsynchUpload and RadBinaryImage inside a Telerikgrid. What i have to do is to upload and display a thumbnail of that Image/PDF/TXT or whatever may be the file type in RadBinaryImage after download.
I have added a CustomHandler in RadGrid for uploading. Now the problem is when i remove CustomHandler uploading don't happens and when i put CustomHandler then the image preview not works.....
What i have to do is both should work. Please find attached code snippet along with screenshot of issue below.
Awaiting for your prompt reply. Looking forward to speak with you.
Code Snippet:
aspx
------
<MasterTableView Width="100%" CommandItemDisplay="Top" DataKeyNames="CD_SRNO" CommandItemSettings-AddNewRecordText="Add New File">
<Columns>
<telerik:GridTemplateColumn HeaderText="Remarks" UniqueName="Description" DataField="Description">
<ItemTemplate>
<asp:Label ID="lblDescription" Width="400px" runat="server" Text='<%#Eval("Description") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<telerik:RadTextBox ID="txbDescription" Width="400px" runat="server" TextMode="MultiLine"
Text='<%# Eval("Description") %>' Height="30px">
</telerik:RadTextBox>
<asp:RequiredFieldValidator ID="Requiredfieldvalidator1" runat="server" ControlToValidate="txbDescription"
ErrorMessage="*" Display="Dynamic" SetFocusOnError="true"></asp:RequiredFieldValidator>
</EditItemTemplate>
<ItemStyle VerticalAlign="Top"></ItemStyle>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="Data" HeaderText="Document" UniqueName="Upload">
<ItemTemplate>
<telerik:RadBinaryImage runat="server" ID="RadBinaryImage1" AutoAdjustImageControlSize="false"
DataValue='<%#Eval("Data") %>' Height="42px" Width="80px"></telerik:RadBinaryImage>
</ItemTemplate>
<EditItemTemplate>
<telerik:RadAsyncUpload runat="server" ID="AsyncUpload1" AllowedFileExtensions=".jpg,.jpeg,.png,.gif,.Pdf,.doc,.docx,.xls"
MaxFileInputsCount="1" Skin="Outlook" PostbackTriggers="PerformInsertButton"
MaxFileSize="1048576" OnClientFileUploaded="OnClientFileUploaded" HttpHandlerUrl="~/Conference/CustomHandler.ashx" />
<asp:CustomValidator runat="server" ID="CustomValidator" Display="Dynamic" ClientValidationFunction="validateUpload"
ErrorMessage="*" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="Data" HeaderText="Download" UniqueName="Upload">
<ItemTemplate>
<asp:LinkButton runat="server" OnClick="lnkDownload_Click" CommandArgument='<%# Eval("CD_SRNO") %>'
ID="lnkDownload" Text='<%# string.Concat("Document-", Eval("CD_SRNO"),Eval("DOCTYPE"))%>'></asp:LinkButton>
</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridButtonColumn Text="Delete" CommandName="Delete" ButtonType="ImageButton">
<HeaderStyle Width="36px"></HeaderStyle>
</telerik:GridButtonColumn>
</Columns>
<EditFormSettings>
<EditColumn ButtonType="ImageButton">
</EditColumn>
</EditFormSettings>
</MasterTableView>
CustomHandler
-------------------
Imports System
Imports System.Web
Imports Telerik.Web.UI
Public Class CustomHandler
Inherits AsyncUploadHandler
Protected Overrides Function Process(file As UploadedFile, context As HttpContext, configuration As IAsyncUploadConfiguration, tempFileName As String) As IAsyncUploadResult
configuration.TimeToLive = TimeSpan.FromHours(4)
Return MyBase.Process(file, context, configuration, tempFileName)
End Function
End Class
Hope you would be doing well. I am having an issue in TelerikRad Grid. I am having a TelerikRadAsynchUpload and RadBinaryImage inside a Telerikgrid. What i have to do is to upload and display a thumbnail of that Image/PDF/TXT or whatever may be the file type in RadBinaryImage after download.
I have added a CustomHandler in RadGrid for uploading. Now the problem is when i remove CustomHandler uploading don't happens and when i put CustomHandler then the image preview not works.....
What i have to do is both should work. Please find attached code snippet along with screenshot of issue below.
Awaiting for your prompt reply. Looking forward to speak with you.
Code Snippet:
aspx
------
<MasterTableView Width="100%" CommandItemDisplay="Top" DataKeyNames="CD_SRNO" CommandItemSettings-AddNewRecordText="Add New File">
<Columns>
<telerik:GridTemplateColumn HeaderText="Remarks" UniqueName="Description" DataField="Description">
<ItemTemplate>
<asp:Label ID="lblDescription" Width="400px" runat="server" Text='<%#Eval("Description") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<telerik:RadTextBox ID="txbDescription" Width="400px" runat="server" TextMode="MultiLine"
Text='<%# Eval("Description") %>' Height="30px">
</telerik:RadTextBox>
<asp:RequiredFieldValidator ID="Requiredfieldvalidator1" runat="server" ControlToValidate="txbDescription"
ErrorMessage="*" Display="Dynamic" SetFocusOnError="true"></asp:RequiredFieldValidator>
</EditItemTemplate>
<ItemStyle VerticalAlign="Top"></ItemStyle>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="Data" HeaderText="Document" UniqueName="Upload">
<ItemTemplate>
<telerik:RadBinaryImage runat="server" ID="RadBinaryImage1" AutoAdjustImageControlSize="false"
DataValue='<%#Eval("Data") %>' Height="42px" Width="80px"></telerik:RadBinaryImage>
</ItemTemplate>
<EditItemTemplate>
<telerik:RadAsyncUpload runat="server" ID="AsyncUpload1" AllowedFileExtensions=".jpg,.jpeg,.png,.gif,.Pdf,.doc,.docx,.xls"
MaxFileInputsCount="1" Skin="Outlook" PostbackTriggers="PerformInsertButton"
MaxFileSize="1048576" OnClientFileUploaded="OnClientFileUploaded" HttpHandlerUrl="~/Conference/CustomHandler.ashx" />
<asp:CustomValidator runat="server" ID="CustomValidator" Display="Dynamic" ClientValidationFunction="validateUpload"
ErrorMessage="*" />
</EditItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn DataField="Data" HeaderText="Download" UniqueName="Upload">
<ItemTemplate>
<asp:LinkButton runat="server" OnClick="lnkDownload_Click" CommandArgument='<%# Eval("CD_SRNO") %>'
ID="lnkDownload" Text='<%# string.Concat("Document-", Eval("CD_SRNO"),Eval("DOCTYPE"))%>'></asp:LinkButton>
</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridButtonColumn Text="Delete" CommandName="Delete" ButtonType="ImageButton">
<HeaderStyle Width="36px"></HeaderStyle>
</telerik:GridButtonColumn>
</Columns>
<EditFormSettings>
<EditColumn ButtonType="ImageButton">
</EditColumn>
</EditFormSettings>
</MasterTableView>
CustomHandler
-------------------
Imports System
Imports System.Web
Imports Telerik.Web.UI
Public Class CustomHandler
Inherits AsyncUploadHandler
Protected Overrides Function Process(file As UploadedFile, context As HttpContext, configuration As IAsyncUploadConfiguration, tempFileName As String) As IAsyncUploadResult
configuration.TimeToLive = TimeSpan.FromHours(4)
Return MyBase.Process(file, context, configuration, tempFileName)
End Function
End Class
0
Hi Mayur,
What are you doing inside the OnClientFileUploaded event? As far as I see you don't need this custom handler, because it doesn't provide additional functionality.
Regards,
Hristo Valyavicharski
Telerik
What are you doing inside the OnClientFileUploaded event? As far as I see you don't need this custom handler, because it doesn't provide additional functionality.
Regards,
Hristo Valyavicharski
Telerik
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