本文介绍了为什么我收到Specified参数超出了有效值的误差范围的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 限时删除！！ 我有以下asp.net代码： < 表 class = taskGridView runat = server > < tr > < td > < asp：DropDownList ID = ddlTaskName CssClass = selected-select DataSourceID = dsPopulateTaskName AutoPostBack = true DataValueField = 任务名称 runat = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlTaskName_onSelectIndexChanged > < asp：ListItem 文本 = 全部 值 = ％ > < / asp：ListItem > < / asp：DropDownList > < asp：SqlDataSource ID = dsPopulateTaskName runat = server ConnectionString = <％ $ ConnectionStrings：gvCo nnString％> SelectCommand = > < / asp：SqlDataSource > < ; / td > < td > < asp：DropDownList ID = ddlService CssClass = selected-select DataSourceID = dsPopulateService AutoPostBack = true DataValueField = 服务 runat = server 宽度 = 100％ 字体-Size = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlService_onSelectIndexChanged > < asp：ListItem 文本 = 所有 值 = ％ > < / asp：ListItem > < / asp：DropDownList > < asp：SqlDataSource ID = dsPopulateService runat = 服务器 ConnectionString = <％ $ ConnectionStrings：gvConnString％> SelectCommand = > < / asp：SqlDataSource > < / td > < td > < asp：DropDownList ID = ddlStatus CssClass = selected-select DataSourceID = dsPopu lateStatus AutoPostBack = true DataValueField = 状态 runat = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlStatus_onSelectIndexChanged > < asp：ListItem 文本 = 所有 值 = ％ > < / asp：ListItem > < / asp：DropDownList > < asp：SqlDataSource ID = dsPopulateStatus runat = server ConnectionString = <％ $ ConnectionStrings：gvConnString％> SelectCommand = > < / asp：SqlDataSource > < / td > < td > < asp：DropDownList ID = ddlDueDate CssClass = selected-select DataSourceID = dsPopulateDueDate AutoPostBack = true DataValueField = 截止日期 runat = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlDueDate_onSelectIndexChanged > < asp：ListItem 文字 = 全部 值 = ％ > < / asp：ListItem > < / asp：DropDownList > < asp：SqlDataSource ID = dsPopulateD ueDate runat = server ConnectionString = <％ $ ConnectionStrings：gvConnString％> SelectCommand = > < / asp：SqlDataSource > < / td > < td > < asp：DropDownList ID = ddlOwner CssClass = selected-select DataSourceID = dsPopulateOwner AutoPostBack = true DataValueField = 所有者 运行at = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlOwner_onSelectIndexChanged > < asp：ListItem 文本 = 所有 值 = ％ > < / asp：ListItem > < / asp：DropDownList > < asp：SqlDataSource ID = dsPopulateOwner runat = server ConnectionString = < ;％ $ ConnectionStrings：gvConnString％> SelectCommand = > < / asp：SqlDataSource > < / td > < td > < asp：DropDownList ID = ddlClient CssClass = selected-select DataSourceID = dsPopulateClient AutoPostBack = true DataValueField = 客户端 runat = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlClient_onSelectIndexChanged > < asp：ListItem 文字 = 所有 值 = ％ > < / asp：ListItem > < / asp ：DropDownList > < asp：SqlDataSource ID = dsPopulateClient runat = server ConnectionString = <％ $ ConnectionStrings：gvConnString％> SelectCommand = > < / asp：SqlDataSource > < / td > < td > < asp：DropDownList ID = ddlSite CssClass = chos en-select DataSourceID = dsPopulateSite AutoPostBack = true DataValueField = 网站 runat = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlSite_onSelectIndexChanged > < asp：ListItem 文本 = 所有 值 = ％ > < / asp：ListItem > & lt; / asp：DropDownList > < asp：SqlDataSource ID = dsPopulateSite runat = server ConnectionString = <％ $ ConnectionStrings：gvConnString％> SelectCommand = > &l t; / asp：SqlDataSource > < / td > < td > < asp：DropDownList ID = ddlPractice CssClass = selected-select DataSourceID = dsPopulatePractice AutoPostBack = true DataValueField = 练习 runat = server 宽度 = 100％ 字体大小 = 11px AppendDataBoundItems = true OnSelectedIndexChanged = ddlPractice_onSelectIndexChanged > < asp：ListItem 文本 = 所有 值 = ％ > < / asp：ListItem > < / asp：DropDownList > < ; asp：Sql DataSource ID = dsPopulatePractice runat = server ConnectionString = <％ $ ConnectionStrings：gvConnString％> SelectCommand =\"\"></asp:SqlDataSource> </td> <td> <asp:DropDownList ID=\"ddlProvider\" CssClass=\"chosen-select\" DataSourceID=\"dsPopulateProvider\" AutoPostBack=\"true\" DataValueField=\"Provider\" runat=\"server\" Width=\"100%\" Font-Size=\"11px\" AppendDataBoundItems=\"true\" OnSelectedIndexChanged=\"ddlProvider_onSelectIndexChanged\"> <asp:ListItem Text=\"All\" Value=\"%\"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID=\"dsPopulateProvider\" runat=\"server\" ConnectionString=\"<%$ ConnectionStrings:gvConnString %>\" SelectCommand=\"\"></asp:SqlDataSource> </td> </tr> </table> <asp:GridView ShowHeaderWhenEmpty=\"false\" AlternatingRowStyle-BackColor=\"#EBE9E9\" AutoGenerateColumns=\"false\" OnSorting=\"yourTasksGV_Sorting\" AllowSorting=\"true\" ID=\"yourTasksGV\" runat=\"server\" ClientIDMode=\"Static\" EmptyDataText=\"You currently have no tasks assigned to you\" OnRowDataBound=\"yourTasksGV_RowDataBound\" OnRowCreated=\"yourTasksGV_RowCreated\"> <Columns> <asp:HyperLinkField Target=\"_self\" DataNavigateUrlFields=\"Task Detail\" DataTextField=\"Task Name\" DataNavigateUrlFormatString=\"\" HeaderText=\"Task Detail\" SortExpression=\"Task Name\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Service\" HeaderText=\"Service\" SortExpression=\"Service\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Status\" HeaderText=\"Status\" SortExpression=\"Status\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Due Date\" HeaderText=\"Due\" SortExpression=\"Due Date\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Owner\" HeaderText=\"Owner\" SortExpression=\"Owner\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Client\" HeaderText=\"Client\" SortExpression=\"Client\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Site\" HeaderText=\"Site\" SortExpression=\"Site\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Practice\" HeaderText=\"Practice\" SortExpression=\"Practice\" ItemStyle-CssClass=\"taskTableColumn\" /> <asp:BoundField DataField=\"Provider\" HeaderText=\"Provider\" SortExpression=\"Provider\" ItemStyle-CssClass=\"taskTableColumn\" /> </Columns> </asp:GridView> code-behind: protected void yourTasksGV_RowCreated(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.Header) { GridView hGrid = (GridView)sender; GridViewRow gvrRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert); TableHeaderCell tcCellTask = new TableHeaderCell(); tcCellTask.Controls.Add(ddlTaskName); gvrRow.Cells.Add(tcCellTask); yourTasksGV.Controls[0].Controls.AddAt(0, gvrRow); TableHeaderCell tcCellSvc = new TableHeaderCell(); tcCellSvc.Controls.Add(ddlService); gvrRow.Cells.Add(tcCellSvc); yourTasksGV.Controls[0].Controls.AddAt(1, gvrRow); /*TableHeaderCell tcCellStats = new TableHeaderCell(); tcCellStats.Controls.Add(ddlStatus); gvrRow.Cells.Add(tcCellStats); yourTasksGV.Controls[0].Controls.AddAt(2, gvrRow); TableHeaderCell tcCellDD = new TableHeaderCell(); tcCellDD.Controls.Add(ddlDueDate); gvrRow.Cells.Add(tcCellDD); yourTasksGV.Controls[0].Controls.AddAt(3, gvrRow); TableHeaderCell tcCellOwner = new TableHeaderCell(); tcCellOwner.Controls.Add(ddlOwner); gvrRow.Cells.Add(tcCellOwner); yourTasksGV.Controls[0].Controls.AddAt(4, gvrRow); TableHeaderCell tcCellCli = new TableHeaderCell(); tcCellCli.Controls.Add(ddlClient); gvrRow.Cells.Add(tcCellCli); yourTasksGV.Controls[0].Controls.AddAt(5, gvrRow); TableHeaderCell tcCellSit = new TableHeaderCell(); tcCellSit.Controls.Add(ddlSite); gvrRow.Cells.Add(tcCellSit); yourTasksGV.Controls[0].Controls.AddAt(6, gvrRow); TableHeaderCell tcCellPra = new TableHeaderCell(); tcCellPra.Controls.Add(ddlPractice); gvrRow.Cells.Add(tcCellPra); yourTasksGV.Controls[0].Controls.AddAt(7, gvrRow); TableHeaderCell tcCellPro = new TableHeaderCell(); tcCellPro.Controls.Add(ddlProvider); gvrRow.Cells.Add(tcCellPro); yourTasksGV.Controls[0].Controls.AddAt(8, gvrRow);*/ LinkButton btnSort; System.Web.UI.WebControls.Image image; //iterate through all the header cells foreach (TableCell cell in e.Row.Cells) { //check if the header cell has any child controls if (cell.HasControls()) { //get reference to the button column btnSort = (LinkButton)cell.Controls[0]; image = new System.Web.UI.WebControls.Image(); if (ViewState[\"sortExp\"] != null) { //see if the button user clicked on and the sortexpression in the viewstate are same //this check is needed to figure out whether to add the image to this heade column or not if (btnSort.CommandArgument == ViewState[\"sortExp\"].ToString()) { //check what type of sort order it is if (ViewState [\"sortOrder\"].ToString() == \"Asc\") { image.ImageUrl = \"../theImages/up.png\"; image.CssClass = \"hdrImage\"; } else { image.ImageUrl = \"../theImages/down.png\"; image.CssClass = \"hdrImage\"; } cell.Controls.Add(image); } } } } } } After creating the first two header cell, when it gets to the third and consequent one, I get an error stating: Specified argument was out of the range of valid values. Parameter name: index I have 9 columns in the GridView but I am not sure why I am receiving the error. How do I resolve it? If I uncomment everything, only three columns are created but I still get the same error. 解决方案 ConnectionStrings:gvConnString %>\" SelectCommand=\"\" ></asp:SqlDataSource> </td> <td> <asp:DropDownList ID=\"ddlService\" CssClass=\"chosen-select\" DataSourceID=\"dsPopulateService\" AutoPostBack=\"true\" DataValueField=\"Service\" runat=\"server\" Width=\"100%\" Font-Size=\"11px\" AppendDataBoundItems=\"true\" OnSelectedIndexChanged=\"ddlService_onSelectIndexChanged\"> <asp:ListItem Text=\"All\" Value=\"%\"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID=\"dsPopulateService\" runat=\"server\" ConnectionString=\"<%ConnectionStrings:gvConnString %>\" SelectCommand=\"\"></asp:SqlDataSource> $ b$b </td> <td> <asp:DropDownList ID=\"ddlStatus\" CssClass=\"chosen-select\" DataSourceID=\"dsPopulateStatus\" AutoPostBack=\"true\" DataValueField=\"Status\" runat=\"server\" Width=\"100%\" Font-Size=\"11px\" AppendDataBoundItems=\"true\" OnSelectedIndexChanged=\"ddlStatus_onSelect IndexChanged\"> <asp:ListItem Text=\"All\" Value=\"%\"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID=\"dsPopulateStatus\" runat=\"server\" ConnectionString=\"<%ConnectionStrings:gvConnString %>\" SelectCommand=\"\"></asp:SqlDataSource> </td> <td> <asp:DropDownList ID=\"ddlDueDate\" CssClass=\"chosen-select\" DataSourceID=\"dsPopulateDueDate\" AutoPostBack=\"true\" DataValueField=\" Due Date\" runat=\"server\" Width=\"100%\" Font-Size=\"11px\" AppendDataBoundItems=\"true\" OnSelectedIndexChanged=\"ddlDueDate_onSelectIndexChanged\"> <asp:ListItem Text=\"All\" Value=\"%\"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID=\"dsPopulateDueDate\" runat=\"server\" ConnectionString=\"<%I have the following asp.net code:<table class="taskGridView" runat="server"> <tr> <td> <asp:DropDownList ID="ddlTaskName" CssClass="chosen-select" DataSourceID="dsPopulateTaskName" AutoPostBack="true" DataValueField="Task Name" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlTaskName_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateTaskName" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlService" CssClass="chosen-select" DataSourceID="dsPopulateService" AutoPostBack="true" DataValueField="Service" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlService_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateService" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlStatus" CssClass="chosen-select" DataSourceID="dsPopulateStatus" AutoPostBack="true" DataValueField="Status" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlStatus_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateStatus" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlDueDate" CssClass="chosen-select" DataSourceID="dsPopulateDueDate" AutoPostBack="true" DataValueField="Due Date" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlDueDate_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateDueDate" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlOwner" CssClass="chosen-select" DataSourceID="dsPopulateOwner" AutoPostBack="true" DataValueField="Owner" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlOwner_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateOwner" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlClient" CssClass="chosen-select" DataSourceID="dsPopulateClient" AutoPostBack="true" DataValueField="Client" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlClient_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateClient" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlSite" CssClass="chosen-select" DataSourceID="dsPopulateSite" AutoPostBack="true" DataValueField="Site" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlSite_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateSite" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlPractice" CssClass="chosen-select" DataSourceID="dsPopulatePractice" AutoPostBack="true" DataValueField="Practice" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlPractice_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulatePractice" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlProvider" CssClass="chosen-select" DataSourceID="dsPopulateProvider" AutoPostBack="true" DataValueField="Provider" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlProvider_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateProvider" runat="server" ConnectionString="<%$ ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> </tr></table><asp:GridView ShowHeaderWhenEmpty="false" AlternatingRowStyle-BackColor="#EBE9E9" AutoGenerateColumns="false" OnSorting="yourTasksGV_Sorting" AllowSorting="true" ID="yourTasksGV" runat="server" ClientIDMode="Static" EmptyDataText="You currently have no tasks assigned to you" OnRowDataBound="yourTasksGV_RowDataBound" OnRowCreated="yourTasksGV_RowCreated"> <Columns> <asp:HyperLinkField Target="_self" DataNavigateUrlFields="Task Detail" DataTextField="Task Name" DataNavigateUrlFormatString="" HeaderText="Task Detail" SortExpression="Task Name" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Service" HeaderText="Service" SortExpression="Service" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Due Date" HeaderText="Due" SortExpression="Due Date" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Owner" HeaderText="Owner" SortExpression="Owner" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Client" HeaderText="Client" SortExpression="Client" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Site" HeaderText="Site" SortExpression="Site" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Practice" HeaderText="Practice" SortExpression="Practice" ItemStyle-CssClass="taskTableColumn" /> <asp:BoundField DataField="Provider" HeaderText="Provider" SortExpression="Provider" ItemStyle-CssClass="taskTableColumn" /> </Columns></asp:GridView>code-behind:protected void yourTasksGV_RowCreated(object sender, GridViewRowEventArgs e){ if (e.Row.RowType == DataControlRowType.Header) { GridView hGrid = (GridView)sender; GridViewRow gvrRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert); TableHeaderCell tcCellTask = new TableHeaderCell(); tcCellTask.Controls.Add(ddlTaskName); gvrRow.Cells.Add(tcCellTask); yourTasksGV.Controls[0].Controls.AddAt(0, gvrRow); TableHeaderCell tcCellSvc = new TableHeaderCell(); tcCellSvc.Controls.Add(ddlService); gvrRow.Cells.Add(tcCellSvc); yourTasksGV.Controls[0].Controls.AddAt(1, gvrRow); /*TableHeaderCell tcCellStats = new TableHeaderCell(); tcCellStats.Controls.Add(ddlStatus); gvrRow.Cells.Add(tcCellStats); yourTasksGV.Controls[0].Controls.AddAt(2, gvrRow); TableHeaderCell tcCellDD = new TableHeaderCell(); tcCellDD.Controls.Add(ddlDueDate); gvrRow.Cells.Add(tcCellDD); yourTasksGV.Controls[0].Controls.AddAt(3, gvrRow); TableHeaderCell tcCellOwner = new TableHeaderCell(); tcCellOwner.Controls.Add(ddlOwner); gvrRow.Cells.Add(tcCellOwner); yourTasksGV.Controls[0].Controls.AddAt(4, gvrRow); TableHeaderCell tcCellCli = new TableHeaderCell(); tcCellCli.Controls.Add(ddlClient); gvrRow.Cells.Add(tcCellCli); yourTasksGV.Controls[0].Controls.AddAt(5, gvrRow); TableHeaderCell tcCellSit = new TableHeaderCell(); tcCellSit.Controls.Add(ddlSite); gvrRow.Cells.Add(tcCellSit); yourTasksGV.Controls[0].Controls.AddAt(6, gvrRow); TableHeaderCell tcCellPra = new TableHeaderCell(); tcCellPra.Controls.Add(ddlPractice); gvrRow.Cells.Add(tcCellPra); yourTasksGV.Controls[0].Controls.AddAt(7, gvrRow); TableHeaderCell tcCellPro = new TableHeaderCell(); tcCellPro.Controls.Add(ddlProvider); gvrRow.Cells.Add(tcCellPro); yourTasksGV.Controls[0].Controls.AddAt(8, gvrRow);*/ LinkButton btnSort; System.Web.UI.WebControls.Image image; //iterate through all the header cells foreach (TableCell cell in e.Row.Cells) { //check if the header cell has any child controls if (cell.HasControls()) { //get reference to the button column btnSort = (LinkButton)cell.Controls[0]; image = new System.Web.UI.WebControls.Image(); if (ViewState["sortExp"] != null) { //see if the button user clicked on and the sortexpression in the viewstate are same //this check is needed to figure out whether to add the image to this heade column or not if (btnSort.CommandArgument == ViewState["sortExp"].ToString()) { //check what type of sort order it is if (ViewState["sortOrder"].ToString() == "Asc") { image.ImageUrl = "../theImages/up.png"; image.CssClass = "hdrImage"; } else { image.ImageUrl = "../theImages/down.png"; image.CssClass = "hdrImage"; } cell.Controls.Add(image); } } } } }}After creating the first two header cell, when it gets to the third and consequent one, I get an error stating:Specified argument was out of the range of valid values.Parameter name: indexI have 9 columns in the GridView but I am not sure why I am receiving the error.How do I resolve it?If I uncomment everything, only three columns are created but I still get the same error. 解决方案 ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlService" CssClass="chosen-select" DataSourceID="dsPopulateService" AutoPostBack="true" DataValueField="Service" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlService_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateService" runat="server" ConnectionString="<%ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlStatus" CssClass="chosen-select" DataSourceID="dsPopulateStatus" AutoPostBack="true" DataValueField="Status" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlStatus_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateStatus" runat="server" ConnectionString="<%ConnectionStrings:gvConnString %>" SelectCommand=""></asp:SqlDataSource> </td> <td> <asp:DropDownList ID="ddlDueDate" CssClass="chosen-select" DataSourceID="dsPopulateDueDate" AutoPostBack="true" DataValueField="Due Date" runat="server" Width="100%" Font-Size="11px" AppendDataBoundItems="true" OnSelectedIndexChanged="ddlDueDate_onSelectIndexChanged"> <asp:ListItem Text="All" Value="%"></asp:ListItem> </asp:DropDownList> <asp:SqlDataSource ID="dsPopulateDueDate" runat="server" ConnectionString="<% 这篇关于为什么我收到Specified参数超出了有效值的误差范围的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 1403页，肝出来的..