在用户控件中回发后保留文本框中的值 [英] preserve value in textbox after postback in user control

问题描述

我正在通过jquery将文本加载到文本框中:

I am loading text into a textbox through jquery as so:

 $.ajax({
        type: "POST",
        url: "../myfile.ascx/myfunction",
        data: "{variable:'" + value + "'}",
        contentType: "application/json",
        dataType: "json",
        success: function (response) {
            $('input[id$=txtMyTextBox]').val(response.d);

        }
    });

这部分工作正常，但是当我导致页面从其他控件回发时，我松开了它在txtMyTextBox中插入的值.现在我正在使用用户控件，因此我使用了databind而不是页面加载.我试过了:

this portion works fine, but when I cause the page to postback from other controls I loose the value it had inserted in txtMyTextBox..Now I am using a user control so I have a databind instead of page load. I tried this:

protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack)
            Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "RefreshJob();", true);
    }

但是那也不会带回值.我添加了一个隐藏字段，该字段在任何回发后都会保存该值，但不确定如何将其保存在文本框中.

but that wouldn't bring back the value either. I added a hidden field which holds the value after any postback, but not sure what to do to keep the value in the textbox aswell.

推荐答案

我认为您正在使用html输入元素，而是使用asp文本框控件，并使用$('#<%=txtbox.ClientID%>').val(response.d);将其ID传递给jquery，并使用viewstate维护文本框的状态控制

I think you are using html input element, use asp textbox control instead and pass it's ID to jquery using $('#<%=txtbox.ClientID%>').val(response.d); and use viewstate for maintaining state of the textbox control

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