在asp.net数据表的标志列的基础上，在运行时更改下拉菜单项的背景色 [英] change background color of dropdown items at runtime on the basis of flag column of a datatable asp.net

问题描述

我有一个下拉菜单 cboVendor ，其中供应商名称即将到来
i希望背景颜色为红色，其 fullyAgg column （dt包含11列，其中fullagg是第11列）即将为零。下面的代码，但是将所有参数都设为零（不应该发生）

i have a dropdown cboVendor in which supplier name is coming now i want background colour to be red whose fullyAgg column(dt contains 11 columns in which fullagg is the 11th column) is coming as Zero.currently i am doing as shown in the below code but it is taking all of them a zero(which should not happen)

.aspx

<asp:DropDownList ID="cboVendor" runat="server" AppendDataBoundItems="True"
AutoPostBack="true"> <asp:ListItem Value="0">- Select Vendor -</asp:ListItem>
</asp:DropDownList>

c＃代码

DataTable dt = default(DataTable);
cboVendor.DataSource = dt;
cboVendor.DataTextField = "SupplierName";
cboVendor.DataValueField = "SupplierID";
cboVendor.DataBind();
cboVendor.SelectedIndex = 0;
foreach (ListItem item in cboVendor.Items) {
    if (dt.Rows(10)("fullyAgg") == 0) {
        item.Attributes.Add("style", "background-color:red;");
    }
}

推荐答案

找到了解决方案

DataView dv = dt.DefaultView;
dv.RowFilter = "fullyAgg=0";
foreach (DataRowView dr in dv) {
    foreach (ListItem item in cboVendor.Items) {
        if (dr("SupplierID").ToString() == item.Value.ToString()) {
            item.Attributes.Add("style", "background-color:red;");
        }
    }
}

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