我hava网格包含用于显示国家/地区名称的列。我需要在该列中显示值作为contrycode - 国家名称的前10个字母(在印度)。我在项目模板中使用Eval函数尝试了它:
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="CountryNameLabe" runat="server" Text='<%# Eval("CorporateAddressCountry").SubString(0,6) %>' ></asp:Label>
</ItemTemplate>
</asp:TemplateField>
但它显示错误。 我可以在eval中使用自定义函数吗? 请帮忙
答案 0 :(得分:6)
您可以使用三元运算符?
:
<asp:Label ID="CountryNameLabel" runat="server"
Text='<%# Eval("CorporateAddressCountry").ToString().Length <= 10 ? Eval("CorporateAddressCountry") : Eval("CorporateAddressCountry").ToString().Substring(0,10) %>' >
</asp:Label>
另一方面,在我看来更具可读性的方式是使用GridView的RowDataBound
事件:
protected void Gridview1_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
var row = (DataRowView) e.Row.DataItem;
var CountryNameLabel = (Label) e.Row.FindControl("CountryNameLabel");
String CorporateAddressCountry = (String) row["CorporateAddressCountry"];
CountryNameLabel.Text = CorporateAddressCountry.Length <= 10
? CorporateAddressCountry
: CorporateAddressCountry.Substring(0, 10);
}
}
答案 1 :(得分:0)
我是用
做的protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label countryNameLabel = (Label)e.Row.FindControl("CountryNameLabel");
countryNameLabel.ToolTip = countryNameToolTip(countryNameLabel.Text);
countryNameLabel.Text = countryNameDisplay(countryNameLabel.Text);
}
}
protected string countryNameDisplay(string key)
{
CustomerBusinessProvider business = new CustomerBusinessProvider();
string country = business.CountryName(key);
country = key + "-" + country;
if (country.Length > 10)
{
country = country.Substring(0, 10) + "...";
}
return country;
}
protected string countryNameToolTip(string key)
{
CustomerBusinessProvider business = new CustomerBusinessProvider();
return business.CountryName(key);
}