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"No child records to display" when records exist

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Grid

This is a migrated thread and some comments may be shown as answers.

Josh asked on 22 Apr 2015, 04:06 PM

nochildrecordsgrid.png

I have a hierarchical radgrid that is displaying "No child records to display" even when records exist. See attached photo. Below is my RadGrid definition:

<telerik:RadGrid ID="RadGrid1" runat="server" ShowStatusBar="true" AutoGenerateColumns="False"

AllowSorting="True"

OnDetailTableDataBind="RadGrid1_DetailTableDataBind" OnNeedDataSource="RadGrid1_NeedDataSource"

OnPreRender="RadGrid1_PreRender" GroupPanelPosition="Top" OnBatchEditCommand="RadGrid1_BatchEditCommand" Skin="Office2010Black"

AllowFilteringByColumn="True" CellSpacing="-1" GridLines="Both" Visible="false">

<MasterTableView DataKeyNames="wbs_id" RetainExpandStateOnRebind="True" AllowMultiColumnSorting="True" CommandItemDisplay="Top">

<DetailTables>

<telerik:GridTableView runat="server" Width="100%" DataKeyNames="task_id" RetainExpandStateOnRebind="True" Name="Steps">

<CommandItemSettings ShowAddNewRecordButton="False"></CommandItemSettings>

</telerik:GridTableView>

<telerik:GridTableView runat="server" Width="100%" DataKeyNames="task_id" RetainExpandStateOnRebind="True" Name="Steps">

<DetailTables>

<telerik:GridTableView runat="server" Width="100%" DataKeyNames="task_id" RetainExpandStateOnRebind="True" EditMode="Batch" Name="StepDetails" CommandItemDisplay="Top">

</telerik:GridTableView>

</DetailTables>

</telerik:GridTableView>

</DetailTables>

<CommandItemSettings ShowAddNewRecordButton="False"></CommandItemSettings>

</MasterTableView>

<PagerStyle Mode="NumericPages"></PagerStyle>

<MasterTableView DataKeyNames="wbs_id" AllowMultiColumnSorting="True" CommandItemDisplay="Top" RetainExpandStateOnRebind="true">

<CommandItemSettings ShowAddNewRecordButton="false" ShowRefreshButton="true"></CommandItemSettings>

<DetailTables>

<telerik:GridTableView DataKeyNames="task_id" Name="Steps" Width="100%" RetainExpandStateOnRebind="true">

<DetailTables>

<telerik:GridTableView DataKeyNames="task_id" Name="StepDetails" Width="100%" EditMode="Batch" CommandItemDisplay="Top" RetainExpandStateOnRebind="true">

<CommandItemSettings ShowSaveChangesButton="true" ShowCancelChangesButton="true" ShowAddNewRecordButton="false" />

<Columns>

<telerik:GridBoundColumn SortExpression="proc_id" HeaderText="proc id" HeaderButtonType="TextButton"

DataField="proc_id" Display="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="proc_name" HeaderText="Step Name" HeaderButtonType="TextButton"

DataField="proc_name" ReadOnly="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="proc_wt" HeaderText="Step Weight" HeaderButtonType="TextButton"

DataField="proc_wt" ReadOnly="true" AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="complete_pct" HeaderText="Percent Complete" HeaderButtonType="TextButton"

DataField="complete_pct" ReadOnly="true" AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridTemplateColumn UniqueName="CompleteFlag" DataField="complete_flag" HeaderText="Complete" ReadOnly="true"

AllowFiltering="false">

<ItemTemplate>

<asp:CheckBox ID="CheckBox1" runat="server" Checked='<%#DataBinder.Eval (Container.DataItem,"complete_flag").ToString()!="N"? true:false %>' />

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridDateTimeColumn MinDate="2013-01-01" DataField="act_start" HeaderText="Actual Start" SortExpression="act_start"

UniqueName="act_start" DataType="System.DateTime" FilterControlAltText="Filter act_start column" DataFormatString="{0:yyyy/MM/dd}"

ItemStyle-BackColor="#c6f3ff" AllowFiltering="false">

</telerik:GridDateTimeColumn>

<telerik:GridDateTimeColumn MinDate="2013-01-01" DataField="est_act_finish" HeaderText="Est/Actual Finish" SortExpression="est_act_finish"

UniqueName="est_act_finish" DataType="System.DateTime" FilterControlAltText="Filter est_act_finish column" DataFormatString="{0:yyyy/MM/dd}"

ItemStyle-BackColor="#c6f3ff" AllowFiltering="false">

</telerik:GridDateTimeColumn>

<telerik:GridBoundColumn SortExpression="complete_pct_upd" HeaderText="Updated Percent Complete" HeaderButtonType="TextButton"

DataField="complete_pct_upd" DataType="System.Decimal" ItemStyle-BackColor="#c6f3ff" AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="last_updated" HeaderText="Last Updated" HeaderButtonType="TextButton"

DataField="last_updated" ReadOnly="true" DataType="System.DateTime" DataFormatString="{0:yyyy/MM/dd}"

AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="updated_by" HeaderText="Updated By" HeaderButtonType="TextButton"

DataField="updated_by" ReadOnly="true" AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="comments" HeaderText="Comments" HeaderButtonType="TextButton"

DataField="comments" ReadOnly="false" DataType="System.String" AllowFiltering="false" ItemStyle-BackColor="#c6f3ff">

</telerik:GridBoundColumn>

</Columns>

</telerik:GridTableView>

</DetailTables>

<Columns>

<telerik:GridBoundColumn SortExpression="task_id" HeaderText="task_id" HeaderButtonType="TextButton"

DataField="task_id" Display="false" ReadOnly="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="task_code" HeaderText="Activity ID" HeaderButtonType="TextButton"

DataField="task_code" UniqueName="task_code" ReadOnly="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="task_name" HeaderText="Activity Name" HeaderButtonType="TextButton"

DataField="task_name" UniqueName="task_name" ReadOnly="true">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="start" HeaderText="Start" HeaderButtonType="TextButton"

DataField="start" UniqueName="start" DataType="System.DateTime" ReadOnly="true" DataFormatString="{0:yyyy/MM/dd}"

AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="finish" HeaderText="Finish" HeaderButtonType="TextButton"

DataField="finish" UniqueName="finish" DataType="System.DateTime" ReadOnly="true" DataFormatString="{0:yyyy/MM/dd}"

AllowFiltering="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="remain_work_qty" EmptyDataText="" HeaderText="Remaining Hours"

SortExpression="remain_work_qty" UniqueName="remain_work_qty" DataType="System.Decimal"

ReadOnly="true" AllowFiltering="false" DataFormatString="{0:0}">

</telerik:GridBoundColumn>

</Columns>

</telerik:GridTableView>

</DetailTables>

<Columns>

<telerik:GridBoundColumn SortExpression="wbs_id" HeaderText="wbs_id" HeaderButtonType="TextButton"

DataField="wbs_id" Display="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn SortExpression="wbs_name" HeaderText="Work Package" HeaderButtonType="TextButton"

DataField="wbs_name">

</telerik:GridBoundColumn>

</Columns>

</MasterTableView>

</telerik:RadGrid>

This is how it is being bound:

protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)

{

if (RadComboBox1.SelectedIndex != -1 && RadDropDownList1.SelectedIndex != -1)

{

string projid = RadDropDownList1.SelectedValue;

string cam = RadComboBox1.SelectedValue;

if (!e.IsFromDetailTable)

{

RadGrid1.DataSource = GetDataTable("SELECT * FROM PrimaveraWbs WHERE proj_id = " + projid + " and name = '" + cam + "'");

}

public DataTable GetDataTable(string query)

{

String ConnString = ConfigurationManager.ConnectionStrings["PSMSystemConnectionString"].ConnectionString;

SqlConnection conn = new SqlConnection(ConnString);

SqlDataAdapter adapter = new SqlDataAdapter();

adapter.SelectCommand = new SqlCommand(query, conn);

DataTable myDataTable = new DataTable();

conn.Open();

try

{

adapter.Fill(myDataTable);

}

finally

{

conn.Close();

}

return myDataTable;

}

protected void RadGrid1_DetailTableDataBind(object source, Telerik.Web.UI.GridDetailTableDataBindEventArgs e)

{

GridDataItem dataItem = (GridDataItem)e.DetailTableView.ParentItem;

switch (e.DetailTableView.Name)

{

case "Steps":

{

string wbs_id = dataItem.GetDataKeyValue("wbs_id").ToString();

e.DetailTableView.DataSource = GetDataTable("SELECT * FROM PrimaveraTask WHERE wbs_id = " + wbs_id + " ORDER BY task_code");

break;

}

case "StepDetails":

{

string task_id = dataItem.GetDataKeyValue("task_id").ToString();

e.DetailTableView.DataSource = GetDataTable("SELECT * FROM PrimaveraSteps WHERE task_id = " + task_id + "");

break;

}

protected void RadGrid1_PreRender(object sender, EventArgs e)

{

string acb = RadDropDownList1.SelectedText;

if (RadComboBox1 != null && RadDropDownList1.SelectedIndex != -1)

{

if (!Page.IsPostBack)

{

RadGrid1.MasterTableView.Items[0].Expanded = true;

RadGrid1.MasterTableView.Items[0].ChildItem.NestedTableViews[0].Items[0].Expanded = true;

}

How do I ensure that this message is not displayed when records do exist?

Thanks in advance,

Josh

"No child records to display" when records exist

2 Answers, 1 is accepted