我在asp.net页面中有一个asp.net gridview，它继承自母版页。 网格视图位于更新面板内。我需要让用户向网格添加行，所以我在标题中添加了一个按钮。这是网格代码
<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="updtSPG">
<ContentTemplate>
<asp:GridView ID="grdSPGData" runat="server" HorizontalAlign="Center" OnRowDataBound="grdSPGData_RowDataBound"
AutoGenerateColumns="false" AllowPaging="false" EnableViewState="true" ShowHeaderWhenEmpty="true" ShowFooter="true"
DataKeyNames="SPGID" CssClass="table table-hover table-striped table-bordered centerGridHead" OnRowCommand="grdSPGData_RowCommand">
<Columns>
<asp:TemplateField HeaderText="" Visible="false" ShowHeader="false">
<ItemTemplate>
<asp:Label ID="lblSPGID" runat="server" Visible="false" Text='<%# Bind("SPGID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Specialty Group" HeaderStyle-Width="40%">
<ItemTemplate>
<asp:DropDownList ID="ddlSPGSpecialities" runat="server" class="form-control "/>
</ItemTemplate>
<%-- <FooterTemplate>
<asp:DropDownList ID="ddlSPGSpecialities" runat="server" class="form-control "/>
</FooterTemplate>--%>
</asp:TemplateField>
<asp:TemplateField HeaderText="TPA 1_2" HeaderStyle-Width="15%">
<ItemTemplate>
<%--<asp:TextBox ID="txtSPGTPA1_2" CssClass="text-center" Text='<%# Bind("TPA1_2") %>' Width="100%" EnableViewState="true" runat="server" AutoPostBack="true" OnTextChanged="txtSPGTPA1_2_TextChanged"> </asp:TextBox>--%>
<asp:TextBox ID="txtSPGTPA1_2" CssClass="text-center" Width="100%" EnableViewState="true" runat="server" > </asp:TextBox>
</ItemTemplate>
<%-- <FooterTemplate>
<asp:TextBox ID="txtSPGTPA1_2" CssClass="text-center" Width="100%" EnableViewState="true" runat="server" > </asp:TextBox>
</FooterTemplate>--%>
</asp:TemplateField>
<asp:TemplateField HeaderText="TPA 3_5" HeaderStyle-Width="15%">
<ItemTemplate>
<%--<asp:TextBox ID="txtSPGTPA3_5" CssClass="text-center" Text='<%# Bind("TPA3_5") %>' Width="100%" EnableViewState="true" runat="server" AutoPostBack="true" OnTextChanged="txtSPGTPA3_5_TextChanged"> </asp:TextBox>--%>
<asp:TextBox ID="txtSPGTPA3_5" CssClass="text-center" Width="100%" EnableViewState="true" runat="server" > </asp:TextBox>
</ItemTemplate>
<%-- <FooterTemplate>
<asp:TextBox ID="txtSPGTPA3_5" CssClass="text-center" Width="100%" EnableViewState="true" runat="server" > </asp:TextBox>
</FooterTemplate>--%>
</asp:TemplateField>
<asp:TemplateField HeaderText="Total Doctors" ItemStyle-Width="30%">
<ItemTemplate>
<%--<asp:TextBox ID="txtSPGTotalDocs" CssClass="text-center" Text='<%# Bind("TotalDoctors") %>' Width="100%" EnableViewState="true" runat="server" AutoPostBack="true" OnTextChanged="txtSPGTotalDocs_TextChanged"> </asp:TextBox>--%>
<asp:TextBox ID="txtSPGTotalDocs" CssClass="text-center" Width="100%" EnableViewState="true" runat="server" > </asp:TextBox>
</ItemTemplate>
<%-- <FooterTemplate>
<asp:TextBox ID="txtSPGTotalDocs" CssClass="text-center" Width="100%" EnableViewState="true" runat="server" > </asp:TextBox>
</FooterTemplate>--%>
</asp:TemplateField>
<asp:TemplateField ItemStyle-Width="30%">
<HeaderTemplate>
<asp:LinkButton id="btnAddToSPGGrid" CommandName="AddNewRow" runat="server" CausesValidation="false" Text="<i aria-hidden='true' class='icon-plus'></i>" CssClass="btn btn-info btn-xs "/>
</HeaderTemplate>
<ItemTemplate>
<asp:LinkButton id="btnRemove" runat="server" CausesValidation="false" Text="<i aria-hidden='true' class='icon-remove'></i>" CssClass="btn btn-primary btn-xs "/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</ContentTemplate>
<Triggers>
<%--<asp:AsyncPostBackTrigger ControlID="ContentPlaceHolder2_grdSPGData_btnAddToSPGGrid" EventName="click" />--%>
<%--<asp:AsyncPostBackTrigger ControlID="txtSPGTPA3_5" EventName="TextChanged" />
<asp:AsyncPostBackTrigger ControlID="txtSPGTotalDocs" EventName="TextChanged" />--%>
</Triggers>
</asp:UpdatePanel>
</div>
所以当我按下这个按钮时，我可以添加一个新行。我创建了一个新行
protected void createNewRow()
{
//GridViewRow gvRow = new GridViewRow(0, 0, DataControlRowType.DataRow, DataControlRowState.Insert);
dtSPG = new DataTable();
//dtSPG = (DataTable)Session["dtSPG"];
//dtSPG = (Session["dtSPG"] == null ? new DataTable() : (DataTable)Session["dtSPG"]);
if (dtSPG.Columns.Count == 0)
{
dtSPG.Columns.Add("SPGID", typeof(string));
dtSPG.Columns.Add("dos_id", typeof(string));
dtSPG.Columns.Add("TPA1_2", typeof(string));
dtSPG.Columns.Add("TPA3_5", typeof(string));
dtSPG.Columns.Add("TotalDoctors", typeof(string));
}
DataRow dr;
foreach (GridViewRow row in grdSPGData.Rows)
{
dr = dtSPG.NewRow();
dr[0] = ((Label)row.Cells[0].FindControl("lblSPGID")).Text;
dr[1] = ((DropDownList)row.Cells[1].FindControl("ddlSPGSpecialities")).SelectedValue;
dr[2] = ((TextBox)row.Cells[1].FindControl("txtSPGTPA1_2")).Text;
dr[3] = ((TextBox)row.Cells[2].FindControl("txtSPGTPA3_5")).Text;
dr[4] = ((TextBox)row.Cells[3].FindControl("txtSPGTotalDocs")).Text;
dtSPG.Rows.Add(dr);
}
dr = dtSPG.NewRow();
dr[0] = Guid.NewGuid(); dr[1] = ""; dr[2] = ""; dr[3] = ""; dr[4] = "";
dtSPG.Rows.Add(dr);
//spgs.Add(new SpecialtyGroup("2", "00000001-0000-0000-0000-000000000000", 1, 3, 5));
//spgs.Add(new SpecialtyGroup("2", "00000001-0000-0000-0000-000000000000", 1, 3, 5));
grdSPGData.DataSource = dtSPG;
grdSPGData.DataBind();
Session["dtSPG"] = dtSPG;
}
protected void grdSPGData_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName.Equals("AddNewRow"))
{
createNewRow();
}
}
我的问题是，当我按下添加新行按钮时，所有网格内容都会消失，虽然我将它们保存在数据表中，然后重新绑定它。 任何帮助将不胜感激 谢谢