File Upload data getting cleared after a textbox changed event fired

Question

ErrorMessage="*" SetFocusOnError="true" ValidationGroup="ValDept" InitialValue=""> ----------------------------------- TextMode="SingleLine" TabIndex="6" Width="150" MaxLength="10" AutoPostBack="true" CssClass="form-control" OnTextChanged="txtBasicValueGst18Per_TextChanged">

Jayraj Chhaya · Answer

When a postback occurs due to the TextChanged event of the txtBasicValueGst18Per TextBox, the entire page lifecycle is executed again, which includes re-rendering the page controls and resetting their values to their original states. protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { // Check if file data is stored in session state if (Session["FileData"] != null) { // Retrieve file data from session state and reassign it to FileUpload control var fileData = (FileData)Session["FileData"]; fuquationFile1.FileName = fileData.FileName; // Assign other file data properties as needed } } } protected void txtBasicValueGst18Per_TextChanged(object sender, EventArgs e) { // Your event handler logic here // Store file data in session state var fileData = new FileData { FileName = fuquationFile1.FileName, // Set other file data properties as needed }; Session["FileData"] = fileData; } // Define a class to represent file data public class FileData { public string FileName { get; set; } // Add other file data properties as needed }

Jignesh Kumar · Answer

Hello Sandeep, you can use the update panel below and handle partial postback, Servcer side as below, protected void Button1_Click(object sender, EventArgs e) { if (FileUpload1.HasFile) { string fileName = Path.GetFileName(FileUpload1.PostedFile.FileName); FileUpload1.PostedFile.SaveAs(Server.MapPath("~/Uploads/") + fileName); // Additional logic for handling the uploaded file } } protected void txtBasicValueGst18Per_TextChanged(object sender, EventArgs e) { // Handle text changed event }

Sandeep Kumar · Answer

Can i do this using Update Pannel id yes thn how

Dwarkesh Vajjala · Answer

It seems like you might be using .NET WebForms. Could you provide the fileName.aspx.cs file?

Sandeep Kumar · Answer

Any One help me

Sandeep Kumar · Answer

Simple I have Web form page ( aspx) In Existing Page I have added file upload control where there were many textbox changedevent and dropdown onselectindexchanged event fired but when Fileupload attaching a file then file getting cleared when textchanged event fired Please Help m,e