对于下拉选择反映与其他下拉列表相同 [英] For the dropdown selection reflect the same to other dropdown

问题描述

我有两个相同内容的下拉列表，通过选择一个下拉列表，我希望在其他下拉列表中反映出来。



在下拉列表中我有复选框选择。



对于文本框，我确实喜欢

Hi,
I have two dropdowns with same content, by selection of one dropdown I want to reflect same in other dropdown.

In dropdown again I have checkbox selection.

For textbox I did like

text_id_1 = document.getElementById("text_id_1");
    text_id_2 = document.getElementById("text_id_2");
    text_id_2.value = text_id_1.value;

如何进行下拉列表。



Plz建议我。

How to do for dropdown list.

Plz suggest me.

推荐答案

在dropdown1的SelectedIndexChanged事件中，将dropdown2的SelectedIndex设置为dropdown1的SelectedIndex。

In SelectedIndexChanged event of dropdown1, set the SelectedIndex of dropdown2 to SelectedIndex of dropdown1.

void dropdown1_SelectedIndexChanged(object sender, EventArgs e)
        {            
            dropdown2.SelectedIndex = dropdown1.SelectedIndex;
        }

尝试：

Try:

function SelectCorrespondinValue()
{
var dropdownlisttwo = document.getElementById("DropDownListTwo");
var e = document.getElementById("dropdownlistone");
var selectedValue = e.options[e.selectedIndex].text;

for(var i = 0; i < dropdownlisttwo.length -1; i++)
{
    if(selectedValue == dropdownlisttwo.options[i].text)
    { 
        dropdownlisttwo.selectedIndex = i;
    }
}
}

在第一个DropdownList的更改事件中调用此函数。如果有帮助，请告诉我。

Call this function on "change" event of your first DropdownList. Let me know if it helps.

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