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驗證錯誤後假我要文件上傳代碼...在onchange事件上傳到物理文件夾之前檢查文件大小,格式。如果所有驗證都爲真,則上傳按鈕將從onchange事件觸發。Page.IsValid總是在asp.net
一切工作正常,但我錯了上傳格式的文件,並驗證錯誤會彈出,並在接下來的文件上傳Page.Isvalid是假的所以檔案無法上傳甚至正確的格式/尺寸上傳。如何解決這個問題。
下面是代碼:
的JavaScript
function UploadFile(fileUpload) {
if (fileUpload.value != '') {
var title = document.getElementById("<%=txtTitle.ClientID%>").value;
var sFileName = fileUpload.value.toLowerCase();
var sFileExtension = sFileName.split('.')[sFileName.split('.').length - 1];
var file = (fileUpload.files[0].size/1024);
var limit = <%= ConfigurationManager.AppSettings["MaxLimit"]%>;
var maxlimit = limit * 1024;
var type = document.getElementById("<%=hdnType.ClientID%>").value;
if (title != "") {
if (file > maxlimit) {
fileUpload.value = null;
ShowAlert("Sorry the file you are trying to upload exceeds the allowed file limit. Allowed size is 10MB.");
}
else {
if (type == 1) {
if (sFileExtension != "png" && sFileExtension != "jpg" && sFileExtension != "jpeg") {
fileUpload.value = null;
ShowAlert("File Format not supported. Please upload .jpeg/.png files");
}
else {
document.getElementById("<%=btnSave.ClientID%>").click();
}
}
}
}
<asp:FileUpload ID="upldfile" runat="server" onchange="UploadFile(this)" ClientIDMode="Static" />
<asp:Button ID="btnSave" runat="server" UseSubmitBehavior="false" ValidationGroup="save" Text="Save" style="display:none;" OnClick="Upload" data-dismiss="modal" class="btn btn-danger" />
上傳事件
public void Upload(object sender, EventArgs e)
{
if (Page.IsValid)
{
SavePortfolio();
}
}
不工作。在代碼中,fileupload.hasfile是錯誤的 – sara