如何访问updatepanel外部的控件 [英] how to access controls outside updatepanel

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本文介绍了如何访问updatepanel外部的控件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我在更新面板中有一个按钮(比如提交按钮),它显示点击事件的模态弹出窗口(仅在同一更新面板内的模态弹出窗口)。我在更新面板外面有几个文本框。文本框不能在面板内,因为它包含的代码不能在更新面板中运行。当我点击提交按钮时,它显示模式弹出框,其中包括两个按钮(btnyes和btnNo)。我已经为少数文本框调用了cleartext()函数(它清除了所有文本框文本),并且我还会从btnyes click事件中获取一些从数据库到其他文本框的值。这里的问题是,当我点击我的btnyes时,我无法清除我的文本框。是因为,我的文本框在更新面板之外。我怎样才能清除我的文本框?



我的提交按钮和modalpopextender在更新面板的内容模板中,我为btnyes添加了触发器

解决方案

< blockquote>首先在页面的头部写一个javascript函数。



  function  setTextBoxValues(firstValue,secondValue)
{
document .getElementById(' FirstTextBoxID')。value()= ' '; // 清除第一个文本框的文本
document .getElementById(< span class =code-string>' SecondTextBoxID')。value()= ' '; // 清除第二个文本框的文本
document .getElementById(' FirstTextBoxID')。value()= firstValue; // 设置新值
document .getElementById( SecondTextBoxID')。value()= secondValue; // 设置新值
}





点击更新面板内的按钮写下这一行



  protected   void  Button1_Click( object  sender,EventArgs e)
{
string firstValueFromDatabase = valueFromDatabase; // 从数据库获取值
string secondValueFromDatabase = valueFromDatabase; // 从数据库获取值
ScriptManager.RegisterClientScriptBlock(< span class =code-keyword> this , this .GetType(), ClearControls setTextBoxValues(' + firstValueFromDatabase + ',' + secondValueFromDatabase + '); true );
}


I have a button (say submit button) within an update panel which shows modal popup on click event(Modal popup inside same update panel only). I have few textboxes outside the update panel. The text boxes can''t be inside the panel because it contains code that doesn''t run within an update panel. When i click submit button it shows modal pop box which includes two buttons(btnyes and btnNo). I have called "cleartext()" function (which clears all the text box text) for few textbox and also i ll get some values from database to some other textbox in btnyes click event. The problem here is i can''t clear my text box when i click my btnyes. IS it because ,my textboxes are outside the update panel. how can i clear my textboxes?

My submit button and modalpopextender was with in content template of update panel and i added trigger for btnyes

解决方案

First write a javascript function in the head of your page.

function setTextBoxValues(firstValue,secondValue)
{
document.getElementById('FirstTextBoxID').value() = '';//to clear text of first text box
document.getElementById('SecondTextBoxID').value() = '';//to clear text of second text box
document.getElementById('FirstTextBoxID').value() = firstValue;//to set new value
document.getElementById('SecondTextBoxID').value() = secondValue;//to set new value 
}



On click of button inside update panel write this line

protected void Button1_Click(object sender, EventArgs e)
{
string firstValueFromDatabase = "valueFromDatabase";//get value from database
string secondValueFromDatabase = "valueFromDatabase";//get value from database
ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "ClearControls", "setTextBoxValues('" + firstValueFromDatabase + "','" + secondValueFromDatabase + "');", true);
}


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