需要从下拉列表中选择一个按钮 [英] need to enable a button upon the selection from a drop down list

问题描述

如何从下拉列表中选择启用按钮进行编码？

 受保护  void  ddl_Disb_Routine_SelectedIndexChanged（ object  sender，EventArgs e）
 {
 btn_Process.Enabled = 真; 
} 

解决方案

只需检查aspx页面中的AutoPostBack设置为true。

< pre lang =c＃> AutoPostBack = true

检查自动回复属性

尝试这样的事情......

我刚刚添加条件..

 受保护 无效 ddl_Disb_Routine_SelectedIndexChanged（ object  sender，EventArgs e）
 {
  if （DropDownList1.SelectedIndex ==  0 ）
 {
 btn_Process.Enabled =  true ; 
} 
  else  
 {
 btn_Process.Enabled =  false ; 
} 
} 

How do I code to enable a button on selecting from a drop down list?

protected void ddl_Disb_Routine_SelectedIndexChanged(object sender, EventArgs e)
      {
          btn_Process.Enabled = true;
      }

解决方案

Just check AutoPostBack is set to true in your aspx page.

AutoPostBack="true"

check auto post back property

try something like this ...
I have just added conditions..

protected void ddl_Disb_Routine_SelectedIndexChanged(object sender, EventArgs e)
{
    if (DropDownList1.SelectedIndex == 0)
    {
        btn_Process.Enabled = true;
    }
    else
    {
        btn_Process.Enabled = false;
    }
}

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