我有一个DropDownList填充了一组值。当我点击一个值时,DropDownList值应该保持该值,但是大部分时间它会重置为默认值(选择类型)。DropDownLists值重置
下面是DDL:
<asp:TemplateField HeaderText="Criteria Type:" SortExpression="CriteriaType">
<EditItemTemplate>
<asp:DropDownList ID="CriteriaType" AutoPostBack="True" runat="server" SelectedValue='<%# Bind("CriteriaType") %>'>
<asp:ListItem Value="0">Select a Type</asp:ListItem>
<asp:ListItem Value="TMEL Table">TMEL Table</asp:ListItem>
<asp:ListItem Value="Risk Matrix">Risk Matrix</asp:ListItem>
<asp:ListItem Value="Alarm Rationalization">Alarm Rationalization</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<InsertItemTemplate>
<asp:DropDownList ID="CriteriaType" AutoPostBack="True" runat="server" ViewStateMode="Enabled"
SelectedValue='<%# Bind("CriteriaType") %>'>
<asp:ListItem Value="0">Select a Type</asp:ListItem>
<asp:ListItem Value="TMEL Table">TMEL Table</asp:ListItem>
<asp:ListItem Value="Risk Matrix">Risk Matrix</asp:ListItem>
<asp:ListItem Value="Alarm Rationalization">Alarm Rationalization</asp:ListItem>
</asp:DropDownList>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("CriteriaType") %>'></asp:Label></ItemTemplate>
</asp:TemplateField>
这里是后面的代码:
protected void Page_Load(object sender, EventArgs e)
{
DropDownList criteriaType = (DropDownList)DetailsView1.FindControl("CriteriaType");
if (criteriaType.SelectedValue == "TMEL Table")
{
DetailsView1.Fields[5].Visible = true;
DetailsView1.Fields[6].Visible = false;
DetailsView1.Fields[7].Visible = false;
}
else if ((criteriaType.SelectedValue == "Risk Matrix"))
{
DetailsView1.Fields[5].Visible = true;
DetailsView1.Fields[6].Visible = true;
DetailsView1.Fields[7].Visible = true;
DetailsView1.Fields[8].Visible = true;
}
else if ((criteriaType.SelectedValue == "Alarm Rationalization"))
{
DetailsView1.Fields[5].Visible = true;
DetailsView1.Fields[6].Visible = true;
DetailsView1.Fields[7].Visible = true;
DetailsView1.Fields[8].Visible = true;
}
else if (criteriaType.SelectedValue == "Select a Type")
{
DetailsView1.Fields[5].Visible = false;
DetailsView1.Fields[6].Visible = false;
DetailsView1.Fields[7].Visible = false;
}
}
DropDownList的值现在保持不变,但没有操作字段。当我点击任何DDL值时,没有一个应该是可见的DetailsView1字段变得可见。 – puntubabu 2013-04-29 16:04:28