在gridview模板中添加了dropdownlist,实现用javascrpt脚本在第一行的dropdownlist改变以后，其他几行的dropdownlist的值和第一行的dropdownlist值一样
<script language="javascript" type="text/javascript">
function onfirstTxtChange()
{
var gv = document.getElementById('<%= GridView1.ClientID %>');
var txt = document.getElementById('<%= FirstTextBoxClientID %>');
var selects = gv.getElementsByTagName("select");
for(var i = 0; i < selects.length; i++)
{selects[i].value = txt.value;}
}
</script>
private int i = 0;
private string _firstDropDownlistClientID;
protected string FirstDropDownlistClientID
{
get { return _firstDropDownlistClientID; }
set { _firstDropDownlistClientID = value; }
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (i++ > 0)
return;
else
{
DropDownList tb = (DropDownList)e.Row.FindControl("week"); tb.Attributes.Add("onchange", "onfirstTxtChange()");
FirstDropDownListID = tb.ClientID;
}
}
}
}
运行结果：没有可用于当前位置的源代码
该怎么修改
------解决方案--------------------------------------------------------
不需要写怎么复杂吧，
你试下这个可以实现不
DropDownList1.DataSource = 数据源 (select * from tab )
DropDownList1.DataTextField = “数据中的字段” // 显示的
DropDownList1.DataValueField=“ 数据中的字段” // 主要是绑定 ID 之类的 用来获取
DropDownList1.DataBind();
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) //当DropDownList1 数据改变时
{
ID = DropDownList1.SelectedValue
DropDownList2.DataSource = 数据源 (select * from tab where tabid = 'Id')
DropDownList2.DataTextField = “数据中的字段” // 显示的
DropDownList2.DataValueField=“ 数据中的字段” // 主要是绑定 ID 之类的 用来获取
DropDownList2.DataBind();
}
原理就是这样了，我没试过，写起太麻烦了，你改下就好了，我以前用过
------解决方案--------------------------------------------------------
- JScript code
function onSelectChange(){ var array = ('<%=ToChangeSelectIDs %>').split(','); var gv = document.getElementById('<%= GridView1.ClientID %>'); var mySelect = document.getElementById('<%= FirstSelectClientID %>'); var selIndex = mySelect.selectedIndex; var inputs = gv.getElementsByTagName("select"); for(var i = 0; i < inputs.length; i++) { for(var j = 0; j < array.length; j++) { if(inputs[i].id == array[j]) { inputs[i].options[selIndex].selected = true; break; } } }}