异常详细信息: System.FormatException: 输入字符串的格式不正确 请高手说个解决办法

输入字符串的格式不正确。
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.FormatException: 输入字符串的格式不正确。

源错误:


行 395: <HeaderStyle Width="60px"></HeaderStyle>
行 396: <ItemTemplate>
行 397: <%# Convert.ToSingle(DataBinder.Eval(Container.DataItem,"UnitPrice"))*Convert.ToInt16(DataBinder.Eval(Container.DataItem,"Count"))%>
行 398: </ItemTemplate>
行 399: </asp:TemplateColumn>


源文件: e:\n\3CMarket\customize2.aspx 行: 397

堆栈跟踪:


[FormatException: 输入字符串的格式不正确。]
System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +2752675
System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +102
System.Int16.Parse(String s, NumberStyles style, NumberFormatInfo info) +25
System.String.System.IConvertible.ToInt16(IFormatProvider provider) +43
System.Convert.ToInt16(Object value) +25
ASP.customize2_aspx.__DataBind__control21(Object sender, EventArgs e) in e:\n\3CMarket\customize2.aspx:397
System.Web.UI.Control.OnDataBinding(EventArgs e) +99
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +206
System.Web.UI.Control.DataBind() +12
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.WebControls.DataGrid.CreateItem(Int32 itemIndex, Int32 dataSourceIndex, ListItemType itemType, Boolean dataBind, Object dataItem, DataGridColumn[] columns, TableRowCollection rows, PagedDataSource pagedDataSource) +200
System.Web.UI.WebControls.DataGrid.CreateControlHierarchy(Boolean useDataSource) +1519
System.Web.UI.WebControls.BaseDataList.OnDataBinding(EventArgs e) +56
System.Web.UI.WebControls.BaseDataList.DataBind() +72
_3CMarket.customize2.DoIfLoginOk() in e:\n\3CMarket\customize2.aspx.cs:73
MktPage.ClientPage.Page_Load(Object sender, EventArgs e) in E:\n\3CMarket\MktPage\ClientPage.cs:62
System.EventHandler.Invoke(Object sender, EventArgs e) +0
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061




--------------------------------------------------------------------------------
版本信息: Microsoft .NET Framework 版本:2.0.50727.42; ASP.NET 版本:2.0.50727.210