i wat to clear existing Response.Header and add a new header.

Question

I wrote two methods inside of a button click event. one for download to excel file. second one for download to text file. Both have " Response.AddHeader" codeline. i want to clear the Respond.Header() after the 1st method execution.

i also tried those things.

• response.clearcontent()

• Response.ClearHeaders()

• Response.Clear()

but not worked.

Saravanan Ganesan · Answer

It seems like you're trying to clear the headers after executing the first method inside a button click event in a web application. To better help you, I'll provide a more detailed explanation and steps to achieve this. When you use Response.AddHeader to set HTTP headers, these headers are sent along with the response from the server to the client. If you want to clear the headers after the first method's execution, you need to ensure that you're clearing the headers before the second method is executed. Here's a sample code structure to illustrate how you could achieve this: protected void Button_Click(object sender, EventArgs e) { // Call the first method for downloading Excel file DownloadExcelFile(); // Clear the headers after the first method Response.ClearHeaders(); Response.ClearContent(); Response.Clear(); // Call the second method for downloading Text file DownloadTextFile(); } private void DownloadExcelFile() { // Code to generate and download Excel file // For example: Response.AddHeader("Content-Disposition", "attachment; filename=excel_file.xlsx"); Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; // ... write Excel file content to Response.OutputStream ... Response.Flush(); Response.End(); } private void DownloadTextFile() { // Code to generate and download Text file // For example: Response.AddHeader("Content-Disposition", "attachment; filename=text_file.txt"); Response.ContentType = "text/plain"; // ... write Text file content to Response.OutputStream ... Response.Flush(); Response.End(); }

Abhishek Yadav · Answer

To clear the Response Headers after executing the first method, you can try the following approach: Before executing the first method, save the current Response Headers in a variable. After executing the first method, clear the Response Headers using the Response.ClearHeaders() method. Set the saved Response Headers back to the Response using the Response.Headers property. Here is an example code snippet: protected void YourButtonClickEvent(object sender, EventArgs e) { // Save the current Response Headers var savedHeaders = Response.Headers; // Execute the first method to download excel file DownloadToExcel(); // Clear the Response Headers Response.ClearHeaders(); // Set the saved Headers back to the Response Response.Headers = savedHeaders; // Execute the second method to download text file DownloadToText(); }

Lahiru Kalutotage · Answer

error occurred with "Response.ClearHeaders(); "

Tahir Ansari · Answer

protected void btnDownloadExcel_Click(object sender, EventArgs e) { // Set Excel-specific response headers Response.Clear(); Response.AddHeader("content-disposition", "attachment; filename=excel_file.xlsx"); Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; // Call method to generate Excel content and write to Response.OutputStream GenerateExcelContent(); // End the response Response.End(); } protected void btnDownloadText_Click(object sender, EventArgs e) { // Set Text-specific response headers Response.Clear(); Response.AddHeader("content-disposition", "attachment; filename=text_file.txt"); Response.ContentType = "text/plain"; // Call method to generate Text content and write to Response.OutputStream GenerateTextContent(); // End the response Response.End(); } let me know if it is helpful & accept the answer

Tahir Ansari · Answer

protected void Button_Click(object sender, EventArgs e) { // Method 1: Download Excel File // Set appropriate headers for Excel file download Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; Response.AddHeader("Content-Disposition", "attachment; filename=ExcelFile.xlsx"); // ... your code to generate Excel content ... // After the first method, clear headers Response.ClearHeaders(); Response.Clear(); // Method 2: Download Text File // Set appropriate headers for text file download Response.ContentType = "text/plain"; Response.AddHeader("Content-Disposition", "attachment; filename=TextFile.txt"); // ... your code to generate text content ... // No need to clear headers after the second method since you're done with the response. } Response.ClearHeaders() and Response.Clear() to remove the headers set for the Excel download. This will essentially "reset" the response headers to their default state before you set the headers for the text file download in the second method.

Cr Bhargavi · Answer

protected void Button_Click(object sender, EventArgs e) { // Call the first method for downloading Excel file DownloadExcelFile(); // Clear the headers after the first method Response.ClearHeaders(); Response.ClearContent(); Response.Clear(); // Call the second method for downloading Text file DownloadTextFile(); } private void DownloadExcelFile() { // Code to generate and download Excel file // For example: Response.AddHeader("Content-Disposition", "attachment; filename=excel_file.xlsx"); Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; // ... write Excel file content to Response.OutputStream ... Response.Flush(); Response.End(); } private void DownloadTextFile() { // Code to generate and download Text file // For example: Response.AddHeader("Content-Disposition", "attachment; filename=text_file.txt"); Response.ContentType = "text/plain"; // ... write Text file content to Response.OutputStream ... Response.Flush(); Response.End(); } 0