我在DetailsView的InsertItemTemplate里面放置了一个Dropdownlist控件。
在单击DetailsView的新建按钮后,页面显式Dropdownlist并没有被绑定数据,不知道为什么?
代码如下。
aspx
<asp:TemplateField HeaderText="学科门类" SortExpression="SubjectTypeName">
<InsertItemTemplate>
<asp:DropDownList ID="ddlInsertSubjectType" runat="server">
</asp:DropDownList>
<asp:HiddenField ID="hfInsertSubjectTypeName" runat="server">
</asp:HiddenField>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="lblSubjectTypeName" runat="server" Text='<%# Bind("SubjectTypeName") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>aspx.cs
protected void dvDegreeDiploma_ItemCommand(object sender, DetailsViewCommandEventArgs e)
{
if (e.CommandName == "New")
{
dvDegreeDiploma.ChangeMode(DetailsViewMode.Insert);
dvDegreeDiploma.DataBind();
}
}protected void dvDegreeDiploma_ModeChanging(object sender, DetailsViewModeEventArgs e)
{
if (e.NewMode == DetailsViewMode.Insert)
{
DropDownList ddlInsertSubjectType = (DropDownList)dvDegreeDiploma.FindControl("ddlInsertSubjectType");
BindDdlSubjectType(ddlInsertSubjectType, string.Empty);
}
}
在单击DetailsView的新建按钮后,页面显式Dropdownlist并没有被绑定数据,不知道为什么?
代码如下。
aspx
<asp:TemplateField HeaderText="学科门类" SortExpression="SubjectTypeName">
<InsertItemTemplate>
<asp:DropDownList ID="ddlInsertSubjectType" runat="server">
</asp:DropDownList>
<asp:HiddenField ID="hfInsertSubjectTypeName" runat="server">
</asp:HiddenField>
</InsertItemTemplate>
<ItemTemplate>
<asp:Label ID="lblSubjectTypeName" runat="server" Text='<%# Bind("SubjectTypeName") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>aspx.cs
protected void dvDegreeDiploma_ItemCommand(object sender, DetailsViewCommandEventArgs e)
{
if (e.CommandName == "New")
{
dvDegreeDiploma.ChangeMode(DetailsViewMode.Insert);
dvDegreeDiploma.DataBind();
}
}protected void dvDegreeDiploma_ModeChanging(object sender, DetailsViewModeEventArgs e)
{
if (e.NewMode == DetailsViewMode.Insert)
{
DropDownList ddlInsertSubjectType = (DropDownList)dvDegreeDiploma.FindControl("ddlInsertSubjectType");
BindDdlSubjectType(ddlInsertSubjectType, string.Empty);
}
}
DropDownList1 .DataValueField =""
这2个属性你有没有
{
DropDownList Dep_id = DvInsertDutyInfo.Rows[1].Cells[1].FindControl("DropDownList1") as DropDownList;
Dep_id.DataSource = DataAccess.DataAccess.GetDA.Qurary("select * from Department");
Dep_id.DataTextField = "Dep_name";
Dep_id.DataValueField = "Dep_id";
Dep_id.DataBind();
}