如何获取JavaScript刷新后的控制值 [英] How to get control value after Javascript refresh

问题描述

我有了一个弹出模式窗口页面，模态返回一个值到页面，然后刷新它。我需要能够获得页面的code-背后的价值被刷新，但它返回到文本框控件的值总是，刷新之后。

我怎样才能得到我使用JS返回的值？

在code在目前的测试加入我试图让有内容是刷新之前的文本框的值。

 保护无效的Page_Load（对象发件人，EventArgs的发送）{
    TranslatePage.ObjectsSetup（Page.Controls，3）;
    GetUserInfo（）;
    如果（txtCustomerType.Text =与＆amp;！＆安培;！txtCustomerType.Text = lblTempCustType.Text）{
        SearchCustType（txtCustomerType.Text）;
    }
    SetupControls（）;
    字符串的测试;
    测试= txtCustomerType.Text;
}
 




解决方案

我有类似的情况，但在我的情况，我有这是越来越充满了JavaScript的下拉列表框。 JavaScript已被炒到填充下拉列表后，因此，要获得所选择的价值，我已经使用了一个额外的方法的get值，它是

 公共静态字符串GetValueOfControl（WebControl的ServerControl）
    {
        字符串IdOfControl = ServerControl.UniqueID;
        NameValueCollection中PostBackFormControls = HttpContext.Current.Request.Form;
        如果（PostBackFormControls.AllKeys.Length == 0）
            返回null;
        字符串值= PostBackFormControls [IdOfControl]
        如果（价值== NULL）
        {
            INT索引= 0;
            对于（;指数＆LT; PostBackFormControls.AllKeys.Length;指数++）
                如果（PostBackFormControls.AllKeys [指数] .EndsWith（IdOfControl））
                    打破;
            如果（指数＆LT; PostBackFormControls.AllKeys.Length）
                返回PostBackFormControls [指数]
            其他
                返回null;
        }
        其他
        {
            返回值;
        }
    }
 

和得到我使用的值

 串区= Convert.ToString（GetValueOfControl（dropDownListBoxDistrict））;
 

所以，所有的u需要做的就是添加的方法，并通过文本框来获取其价值，

 字符串测试= Convert.ToString（GetValueOfControl（txtCustomerType））;
 

我相信，它将为ü工作

I have a page that has a popup modal window and the modal returns a value to the page and then refreshes it. I need to be able to get the value in the code-behind of the page when it is refreshed but the value of the text-box control that it is returned to is always "" after refresh.

How can I get the value of the one I returned using JS?

The code is added at a test at the moment as I try to get the value of the textbox which has contents before it is refreshed.

protected void Page_Load(object sender, EventArgs e) {
    TranslatePage.ObjectsSetup(Page.Controls, 3);
    GetUserInfo();
    if (txtCustomerType.Text != "" && txtCustomerType.Text != lblTempCustType.Text) {
        SearchCustType(txtCustomerType.Text);
    }
    SetupControls();
    string test;
    test = txtCustomerType.Text;
}

解决方案

I had similar situation but in my case i had DropDown list box which is getting filled with javascript. So to get the selected value after the javascript has been fired to fill the dropdown list, i have used one additional method the get value which is

public static string GetValueOfControl(WebControl ServerControl)
    {
        string IdOfControl = ServerControl.UniqueID;
        NameValueCollection PostBackFormControls = HttpContext.Current.Request.Form;
        if (PostBackFormControls.AllKeys.Length == 0)
            return null;
        string value = PostBackFormControls[IdOfControl];
        if (value == null)
        {
            int index = 0;
            for (; index < PostBackFormControls.AllKeys.Length; index++)
                if (PostBackFormControls.AllKeys[index].EndsWith(IdOfControl))
                    break;
            if (index < PostBackFormControls.AllKeys.Length)
                return PostBackFormControls[index];
            else
                return null;
        }
        else
        {
            return value;
        }
    }

and to get the value I used

string District = Convert.ToString(GetValueOfControl(dropDownListBoxDistrict));

So, all u need to do is to add the method and pass your text box to get its value as,

string test = Convert.ToString(GetValueOfControl(txtCustomerType));

I am sure, it will work for u

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