postback

No viewstate or postback in ASP MVC?

由 别来无恙 提交于 2019-12-11 13:35:42
问题 I've been learning about MVC for a while, and I think I pretty much understand what it's all about. But there is one thing I don't yet understand: I keep hearing with MVC that there is no viewstate nor postback. Can someone explain what this means in simple terms? 回答1: Try this SO answer which addresses the same question. Extra info after comment/question: ASP.Net web forms can use viewstate to store the state of server controls on the page and to manage invocation of server side events such

File upload is not working with AsyncPostBackTrigger in ASP.Net

由 最后都变了- 提交于 2019-12-11 12:42:06
问题 I have one html file upload control to upload the profile picture and I'm using update panel and AsyncPostBackTrigger trigger. If I use PostBackTrigger then uploading of profile image works but If I use AsyncPostBackTrigger then uploading doesn't work. Below is my code inline: <asp:UpdatePanel ID="pnlZerkerBasicProfile" runat="server"> <input type="file" id="myFile" name="myFile" class="file_input_hidden" onchange="javascript:FileUploadSubmit();" style="cursor: pointer;" /> <Triggers> <asp

ASP.NET getting a hidden field's value after a partial postback

由 做~自己de王妃 提交于 2019-12-11 11:59:31
问题 in my ASP.NET page I have an update panel, and in the updatepanel_Load event I have the following code: if (!IsPostBack || triggeredRefresh.Value == "1") { HiddenField hiddenField = new HiddenField(); hiddenField.ID ="hiddenField1"; hiddenField.Value = "0"; placeHolder1.Controls.Add(hiddenField); } else if ( triggeredCheck.Value == "1" ) { HiddenField hiddenField = placeHolder1.FindControl("hiddenField1") as HiddenField; var x = Convert.ToInt32(hiddenField.Value); } so basically I'm adding

Differences using ajax or post back to post actions

由 ≯℡__Kan透↙ 提交于 2019-12-11 11:37:52
问题 So my question is a little weird, as I did not learn about it (ajax approach) I just reused an original function that I encountered, renamed and tested the function. So in other different scenario (more common): A few <asp:TextBox> controls, one submit button. What is the advantage of Ajax over c# asp.net PostBack? This is the code function AppsName_AjxUpdt(CurrentColumn, recNumSplited, newValue, TBX, ActionRequest, RecordNum) { $.ajax({ type: 'POST', url: 'YourPageNameHere.aspx', data: {

Clear QueryString on PostBack

由 谁说我不能喝 提交于 2019-12-11 11:03:45
问题 Simple question, but I can't figure out how to do it. I have a page with GridView which is populated initially with a querystring. After I get the querystring values, I don't need the querystring, because I use value of an DropDownList for populate the GridView. How can I get rid of it? A postback doesn't clear it, it just keeps tagging along. I tried Request.QueryString.Clear, but get "readonly" errors. I would greatly appreciate any help you can give me in working this problem. EDIT 1 using

asp.net button causes posts back but doesn't fire event

由 佐手、 提交于 2019-12-11 11:00:00
问题 I have an ASP button on my page that is supposed to trigger an event on post back. This used to work but has stopped working on every single page that the search form is on. This particular code has not been updated since I got it all set up and working. The button code looks like: <asp:Button id="search_button" class="search_button" runat="server" OnClick="search_button_click" /> And the post back event code looks like: protected void search_button_click(Object sender, EventArgs e) {

do asp page variables not persist?

由 末鹿安然 提交于 2019-12-11 10:22:49
问题 I have the following test ASP page: <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /> </div> </form> </body> </html> with the following code behind: public partial class test : System.Web.UI.Page { int x = 0; protected void Page_Load(object sender, EventArgs e) {

Is it possible to automate postback from the client side?

由 我们两清 提交于 2019-12-11 10:03:46
问题 One of my clients needs to pull customer data from a web service periodically. The data itself is provided as CSV files via javascript postbacks, as is most of the navigation within the service's website. Right now, the worst bottleneck in the entire system is the need for a human to log into the web page, navigate to the download page, and manually add the downloaded file to the rest of the system. Can the process of downloading files via postback be automated? (Say for example via a shell

javascript created control values are not posting to server

由 [亡魂溺海] 提交于 2019-12-11 08:49:07
问题 In my Html page I create a few textboxes in a loop with javascript. code snippet from inside loop: var row = myTable.tBodies[0].insertRow(rowCount); var cell1 = row.insertCell(0); cell1.style.width = '40%'; var element1 = document.createElement("input"); element1.type = "text"; element1.className = 'textSub'; element1.id = 'txtOndNr' + rowNr; cell1.appendChild(element1); When I press the submit button I can't seem to acces their values server side. I am aware that they are not server controls

Call javascript code afer postback from an update panel

由 [亡魂溺海] 提交于 2019-12-11 08:26:45
问题 I read tis post but my problem still there. I try to execute a javascript multiple time on post back, and the script only execute the first time the page load. To make sure the script is register after each post back i use a guid for the javascript key name. var xyz = DateTime.Now.ToLongTimeString(); string script = @"BrokerCustomValue.value='" + CustomValueToBrokerListSerialized + "';alert('" + xyz + "');"; ScriptManager.RegisterStartupScript(this, GetType(), Guid.NewGuid().ToString(),
订阅 postback