【发布时间】：2013-10-02 17:55:07
【问题描述】：
我有一个带有模板字段的 ASP.NET 4.5 gridview 控件，用于更新/插入/显示 3 列表中的值。因此有一个 onUpdating 事件来处理更新。
我的问题是，当我输入 0、0.0 或其他 0 排列时，十进制列不会更新。适用于正值或负值，并且其他可见列会更新。此外，在小数字段上插入 0 的新行似乎没有问题。
我该如何解决这个问题？
<asp:GridView ID="PriceGroupGv" runat="server" AllowPaging="true" AllowSorting="true" DataSourceID="PriceGroupEds" DataKeyNames="Id" AutoGenerateColumns="false"
ShowHeader="true" ShowHeaderWhenEmpty="false" ShowFooter="true" ItemType="Infrastructure.PricingGroup"
CssClass="table table-bordered table-condensed table-striped" AlternatingRowStyle-BackColor="GhostWhite" OnRowUpdating="PriceGroupGv_RowUpdating">
<EmptyDataTemplate>
<table class="table table-bordered table-condensed table-striped">
<tr>
<th>Name</th>
<th>Markup</th>
<th></th>
</tr>
<tr>
<td>
<asp:TextBox ID="NameTxt" runat="server" />
<asp:RequiredFieldValidator ID="NameRfv" runat="server" ControlToValidate="NameTxt" ValidationGroup="NewRowVg" ForeColor="Red">
*</asp:RequiredFieldValidator>
</td>
<td>
<asp:TextBox ID="MarkupTxt" runat="server"/>
<asp:RegularExpressionValidator ID="MarkupRxv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="NewRowVg" ValidationExpression="^(-)?\d+(\.\d\d)?$" ForeColor="Red">
#.#</asp:RegularExpressionValidator>
<asp:RequiredFieldValidator ID="MarkupRfv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="NewRowVg" ForeColor="Red">
*</asp:RequiredFieldValidator>
</td>
<td>
<asp:LinkButton ID="AddBtn" runat="server" Text="Add New" OnClick="AddBtn_Click" CommandArgument="EmptyData" CausesValidation="true"
ValidationGroup="NewRowVg"/>
</td>
</tr>
</table>
</EmptyDataTemplate>
<Columns>
<asp:BoundField DataField="Id" Visible="false" />
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:Label ID="NameLbl" runat="server" Text="<%# Item.Name %>" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="NameTxt" runat="server" Text="<%# Item.Name %>" />
<asp:RequiredFieldValidator ID="NameRfv" runat="server" ControlToValidate="NameTxt" ValidationGroup="EditRowVg" ForeColor="Red">
*</asp:RequiredFieldValidator>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="NameTxt" runat="server" />
<asp:RequiredFieldValidator ID="NameRfv" runat="server" ControlToValidate="NameTxt" ValidationGroup="NewRowVg" ForeColor="Red">
*</asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Markup">
<ItemTemplate>
<asp:Label ID="MarkupLbl" runat="server" Text="<%# Item.Markup %>" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="MarkupTxt" runat="server" Text="<%# Item.Markup %>"/>
<%--<asp:RangeValidator ID="MarkupRngv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="EditRowVg" Type="Double"
MaximumValue="999.9999" MinimumValue="-999.9999" ForeColor="Red">
#.##</asp:RangeValidator>
<asp:RegularExpressionValidator ID="MarkupRxv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="EditRowVg" ValidationExpression="^(-)?\d+(\.\d\d)?$" ForeColor="Red">
#.#</asp:RegularExpressionValidator>--%>
<asp:RequiredFieldValidator ID="MarkupRfv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="EditRowVg" ForeColor="Red">
*</asp:RequiredFieldValidator>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="MarkupTxt" runat="server"/>
<asp:RangeValidator ID="MarkupRngv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="NewRowVg" Type="Double"
MaximumValue="999.9999" MinimumValue="-999.9999" ForeColor="Red">
#.##</asp:RangeValidator>
<%-- <asp:RegularExpressionValidator ID="MarkupRxv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="NewRowVg"
ValidationExpression="^(-)?\d+(\.\d\d)?$" ForeColor="Red">
#.#</asp:RegularExpressionValidator>--%>
<asp:RequiredFieldValidator ID="MarkupRfv" runat="server" ControlToValidate="MarkupTxt" ValidationGroup="NewRowVg" ForeColor="Red">
*</asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="EditBtn" runat="server" CommandName="Edit" Text="Edit" />
<asp:LinkButton ID="DeleteBtn" runat="server" CommandName="Delete" Text="Delete" />
</ItemTemplate>
<EditItemTemplate>
<asp:LinkButton ID="UpdateBtn" runat="server" CommandName="Update" Text="Update" CausesValidation="true" ValidationGroup="EditRowVg" />
<asp:LinkButton ID="CancelBtn" runat="server" CommandName="Cancel" Text="Cancel" />
</EditItemTemplate>
<FooterTemplate>
<asp:LinkButton id="AddBtn" runat="server" Text="Add New" OnClick="AddBtn_Click" CommandArgument="NotEmpty" CausesValidation="true" ValidationGroup="NewRowVg" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:EntityDataSource ID="PriceGroupEds" runat="server" EnableInsert="true" EnableDelete="true" EnableFlattening="false" EnableUpdate="true" EntitySetName="PricingGroups"
ConnectionString="name=Entities" DefaultContainerName="Entities" />
代码隐藏：
protected void PriceGroupGv_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow gvr = (sender as GridView).Rows[e.RowIndex];
e.NewValues["Name"] = (gvr.FindControl("NameTxt") as TextBox).Text;
e.NewValues["Markup"] = Decimal.Parse((gvr.FindControl("MarkupTxt") as TextBox).Text);
PriceGroupGv.DataBind();
}// end event
【问题讨论】：
-
尝试将该值转储到 PriceGroupGv_RowUpdating 中的临时变量中。然后插入一个断点，并检查该变量得到了什么。也许对 MarkupTxt 的值做同样的事情，只是为了看看它的样子。
-
值通过但 0 仍未更新到数据库。无论我将它们作为字符串还是十进制类型传递，这些值都会出现。
标签： c# asp.net gridview webforms