我有一个调用两个子网格的父网格。但由于某种不明原因，他们被解雇了两次。我似乎无法弄清楚这段代码的问题。谁能指导我？
后端代码（C＃）：
protected void grdGrpPrntRpt_RowDataBound(object sender,
GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox litGrp = (TextBox)e.Row.FindControl("litGrp");
litGrp.Text =
DataBinder.Eval(e.Row.DataItem, "GroupName").ToString();
ViewState["GroupName"] = litGrp.Text;
DataSet ds = (DataSet)ViewState["ds"];
DataView dv = ds.Tables[3].DefaultView;
dv.RowFilter = "GroupName='" + litGrp.Text + "'";
DataTable dt = dv.ToTable();
GridView gvinner = (GridView)e.Row.FindControl("grdInnerMain");
gvinner.DataSource = dt;
gvinner.DataBind();
}
}
catch (Exception Ex)
{
//report error
}
}
protected void grdInnerMain_RowDataBound(object sender,
GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox litUsr = (TextBox)e.Row.FindControl("litUsr");
litUsr.Text =
DataBinder.Eval(e.Row.DataItem, "FirstName").ToString();
// string username=
DataSet ds = (DataSet)ViewState["ds"];
DataView dv = ds.Tables[3].DefaultView;
dv.RowFilter = "userName='" +
DataBinder.Eval(e.Row.DataItem, "UserName").ToString().Replace("'",
"''") + "' and GroupName='" + ViewState["GroupName"].ToString()
+ "'";
DataTable dt = dv.ToTable();
totalPages = 0;
totalCost = 0;
GridView gvinner2 = (GridView)e.Row.FindControl("innerGrid");
gvinner2.DataSource = dt;
gvinner2.DataBind();
}
}
catch (Exception Ex)
{
//report error
}
}
protected void innerGrid_RowDataBound(object sender,
GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
DataView dv =
((DataSet)ViewState["dspaper"]).Tables[0].DefaultView;
dv.RowFilter = "paperid=" +
Convert.ToInt32(DataBinder.Eval(e.Row.DataItem,
"paperid").ToString());
DataTable dt = dv.ToTable();
e.Row.Cells[0].Text = dt.Rows[0]["PaperName"].ToString();
// e.Row.Cells[2].Text = DataBinder.Eval(e.Row.DataItem,
"TotalPagesPrinted").ToString() == "0" ? DataBinder.Eval(e.Row.DataItem,
"TotalPagesSent").ToString() : DataBinder.Eval(e.Row.DataItem,
"TotalPagesPrinted").ToString();
e.Row.Cells[2].Text = DataBinder.Eval(e.Row.DataItem,
"TotalPage").ToString() == "0" ? DataBinder.Eval(e.Row.DataItem,
"Pages_Sent").ToString() : DataBinder.Eval(e.Row.DataItem,
"TotalPage").ToString();
// e.Row.Cells[3].Text =
Convert.ToDouble(e.Row.Cells[3].Text.ToString()).ToString("0.00");
totalPages += Convert.ToInt32(e.Row.Cells[2].Text.ToString());
totalCost += Convert.ToDouble(e.Row.Cells[3].Text.ToString());
e.Row.Cells[1].Text = DataBinder.Eval(e.Row.DataItem,
"Color").ToString() == "0" ? "B & W" : "Color";
}
if (e.Row.RowType == DataControlRowType.Footer)
{
e.Row.Cells[2].Text = totalPages.ToString();
e.Row.Cells[3].Text = totalCost.ToString("0.00");
}
if (e.Row.RowType == DataControlRowType.Header)
{
e.Row.Cells[0].Text =
CResourcesManager.GetString("grdHeaderMediaReport");
e.Row.Cells[1].Text =
CResourcesManager.GetString("grdHeaderColorReport");
e.Row.Cells[2].Text =
CResourcesManager.GetString("grdHeaderPagesReport"); ;
e.Row.Cells[3].Text =
CResourcesManager.GetString("grdHeaderTotalCostReport");
}
}
catch
{ }
}
前端代码：
<asp:GridView Width="100%" ID="grdGrpPrntRpt" runat="server"
AutoGenerateColumns="False"
CellPadding="0" CellSpacing="2" BorderWidth="0px"
ShowHeader="false" RowStyle-HorizontalAlign="Left"
OnRowDataBound="grdGrpPrntRpt_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<table id="tblInnerHeader" runat="server"
width="100%" cellspacing="0" cellpadding="0">
<tr bgcolor="gray" valign="top">
<td width="20%" height="30px">
<asp:TextBox ID="litGrp"
ForeColor="White" BackColor="Gray" CssClass="LabelText2"
runat="server" BorderStyle="None"
BorderWidth="0"></asp:TextBox>
</td>
<td width="2%">
</td>
<td width="78%" align="left">
<asp:ImageButton ID="imgMainShowHide"
runat="server" ImageUrl="~/Images/plus.jpg"
OnClick="imgMainShowHide_Click" />
</td>
</tr>
</table>
<table id="tblFirstInnerGrid" runat="server"
visible="false" width="100%" cellspacing="2"
cellpadding="0">
<tr>
<td align="center">
<asp:GridView Width="100%"
ID="grdInnerMain" runat="server" AutoGenerateColumns="False"
CellPadding="0" CellSpacing="2"
BorderWidth="0px" ShowHeader="false" RowStyle-HorizontalAlign="Left"
OnRowDataBound="grdInnerMain_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<table id="tblHeader"
runat="server" width="100%" cellspacing="0" cellpadding="0">
<tr bgcolor="Wheat"
valign="top">
<td width="20%"
height="25px">
<asp:TextBox
ID="litUsr" ForeColor="Blue" BackColor="Wheat" CssClass="LabelText2"
runat="server" BorderStyle="None" BorderWidth="0"></asp:TextBox>
</td>
<td width="2%">
</td>
<td width="78%"
align="left">
<asp:ImageButton ID="imgShowHide" runat="server" ImageUrl="~/Images/plus.jpg"
OnClick="imgShowHide_Click" />
</td>
</tr>
</table>
<table id="tblInnerGrid"
runat="server" visible="false" width="100%" cellspacing="2"
cellpadding="0">
<tr>
<td align="center">
<asp:GridView
ID="innerGrid" runat="server" AutoGenerateColumns="False" CellPadding="0"
CellSpacing="2" HeaderStyle-CssClass="GridHeaderNoSorting" BorderWidth="0px"
ShowFooter="true" RowStyle-HorizontalAlign="Left" Width="98%"
OnRowDataBound="innerGrid_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<%-- <asp:Label ID="lblMedia" runat="server"></asp:Label>--%>
</ItemTemplate>
</asp:TemplateField>
<%--<asp:BoundField DataField="Color" HeaderText="Color/ B & W" /> --%>
<asp:TemplateField HeaderText="Color/ B & W">
<ItemTemplate>
<%-- <asp:Label ID="lblColor" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Color").ToString()=="0" ? "B & W" :"Color" %>'></asp:Label>--%>
</ItemTemplate>
</asp:TemplateField>
<%--<asp:BoundField DataField="TotalPagesPrinted" ItemStyle-HorizontalAlign="Center" />--%>
<asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderStyle-HorizontalAlign="Center"
FooterStyle-HorizontalAlign="Center">
<ItemTemplate>
<%--<asp:Label ID="lblPagesPrinted" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Color").ToString()=="0" ? "B & W" :"Color" %>'></asp:Label>--%>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Total_Cost" ItemStyle-HorizontalAlign="Center" HeaderStyle-HorizontalAlign="Center"
FooterStyle-HorizontalAlign="Center" />
</Columns>
<HeaderStyle CssClass="GridHeaderNoSorting" />
<AlternatingRowStyle CssClass="GridAlternateRowStyle" />
<RowStyle CssClass="GridRowStyle" />
<FooterStyle CssClass="GridFooter" HorizontalAlign="Left" />
</asp:GridView>
</td>
</tr>
</table>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<AlternatingRowStyle CssClass="GridAlternateRowStyle" />
<RowStyle CssClass="GridRowStyle" />
</asp:GridView>
</td>
</tr>
</table>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<AlternatingRowStyle CssClass="GridAlternateRowStyle" />
<RowStyle CssClass="GridRowStyle" />
</asp:GridView>
额外信息
出于某种原因，事件grdGrpPrntRpt_RowDataBound被调用的次数与下一个网格中的数据一样多。它应该在接下来的两个网格中的整个数据被绑定后立即终止，但它再次调用它并再次重复整个过程。
答案 0 :(得分：2)
有可能由于AutoEventWireUp，在您的代码中可能是这样。
如果是，请将其设为假。感谢
答案 1 :(得分：1)
检查你是否将GridView绑定到其他一些事件上，可能是Page_Load或......如果你在Page_Load上绑定GridView，请按以下方式执行：
if (!Page.IsPostBack)
{
//bind your GridView
}
答案 2 :(得分：1)
问题应该只是意味着你以某种方式调用grdGrpPrntRpt.DataBind（）两次，
你的嵌套gridview数据绑定的实现似乎是正确的所以问题
可能是对主网格进行数据绑定的事件。
尝试评论主网格DataBind的每一行并将其放在Page_Load
上事件，你可能会遇到另一个问题，但你会更接近解决方案。
答案 3 :(得分：0)
始终检查所有绑定网格或调用gridbinding函数的位置。如： -
你可能先在Page_Load上调用它来绑定第一次，然后你可以在imgMainShowHide_Click事件中调用它来将它绑定到新值。因此绑定网格两次，所以确保仅在Page_Load上的！Ispostback时绑定并启用gridview viewstate以在回发期间保持其状态。
答案 4 :(得分：0)
我认为给定的后端代码和前端代码没有任何问题。您可以查看this link以供参考。
答案 5 :(得分：0)
网格的RowDataBound触发网格中存在的行数的次数。
因此请确保您的父网格是否有多条记录..
答案 6 :(得分：-1)
请确保你的HTML代码gridview
OnRowCreated="gv_RowCreated"
。面对同样的问题。