求教,datagrid里一模板列内含dropdownlist

wuyu1980 2003-07-24 09:36:23

AutoPost的,我怎么在服务器段捕捉到选择变化的dropdownlist?
如何触发相关的SelectChanged事件?
谢谢

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saucer 2003-07-24

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void DropDownList1_SelectedIndexChanged(Object sender, EventArgs e)
{
DropDownList ddl = (DropDownList)sender;
DataGridItem dgi = (DataGridItem)ddl.Parent.Parent;
Response.Write(dgi.ItemIndex);
}

wuyu1980 2003-07-24

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谢谢xrll,但是怎么知道当前触发事件的dropdownlist是第几行的呢?
以前做command的时候,直接是e.什么什么.index
现在如何知道呢?
问完结帖

xrll 2003-07-24

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在datagrid　itemdatabound事件中遍历dropdownlist控件，然后加入
DropList.SelectedIndexChanged +=
new EventHandler(OnSelectedIndexChangedMethod);
在OnSelectedIndexChangedMethod事件中编写相应代码

ruyedian 2003-07-24

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Sub DropDownList1_SelectedIndexChanged(sender As Object, E As System.EventArgs)
textvalue = sender.selecteditem.value
texttext = sender.selecteditem.Text
End Sub

<asp:TemplateColumn HeaderText="证照种类">
<ItemTemplate>
<asp:DropDownList ID="Qualification" Runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
<asp:ListItem value="0" Text=""/>
<asp:ListItem value="1" Text="初级工"/>
<asp:ListItem value="2" Text="中级工"/>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>

saucer 2003-07-24

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try the following

<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.SqlClient" %>
<script runat="server">
DataSet ds;

void Page_Load(Object sender, EventArgs e)
{

if (!IsPostBack)
{

SqlConnection cnn = new SqlConnection("server=(local);database=pubs; uid=sa; pwd=;");
SqlDataAdapter da = new SqlDataAdapter("select * from authors",cnn);

ds = new DataSet();
da.Fill(ds,"authors");

DataGrid1.DataSource = ds.Tables["authors"].DefaultView;
DataGrid1.DataBind();
}

}

void DropDownList1_SelectedIndexChanged(Object sender, EventArgs e)
{
DropDownList ddl = (DropDownList)sender;
Response.Write(ddl.SelectedItem.Text);
}

void Item_Bound(Object sender, DataGridItemEventArgs e)
{

if((e.Item.ItemType == ListItemType.Item) ||
(e.Item.ItemType == ListItemType.AlternatingItem))
{
DropDownList ddl = (DropDownList)e.Item.FindControl("DropDownList1");
ddl.DataSource = ds.Tables["authors"].DefaultView;
ddl.DataTextField = "au_lname";
ddl.DataValueField = "au_id";
ddl.DataBind();
ddl.Items.FindByValue(DataBinder.Eval(e.Item.DataItem,"au_id").ToString()).Selected = true;
}

}

</script>
<html>
<head>
</head>
<body>
<form runat="server">
<asp:DataGrid id="DataGrid1" runat="server" OnItemDataBound="Item_Bound">
<Columns>
<asp:TemplateColumn HeaderText="DropDownList">
<ItemTemplate>
<asp:DropDownList id="DropDownList1"
OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"
AutoPostBack="True"
runat="server" D/>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
</form>
</body>
</html>

xrll 2003-07-24

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如果要触发 OnSelectedIndexChanged必须将AutoPostBack="True"
在OnSelectedIndexChangedMethod事件中编写相应代码，无需按钮点击事件：
AutoPostBack="True"
OnSelectedIndexChanged="OnSelectedIndexChangedMethod"

xrll 2003-07-24