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Radgrid Insert Method Keep Editor Open on Validation Failure

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

Angelo asked on 15 Aug 2018, 03:49 PM

I have a Radgrid where I am doing some extra validation on the InsertMethod. If that validation fails, I need to make sure that the editor stays open so that the user can still perform editing on the form.

My radgrid is declared as follows:

<telerik:RadGrid

ID="rgRuleExemptions"

runat="server"

AutoGenerateColumns="false"

AllowPaging="true"

AllowSorting="true"

ClientSettings-EnableRowHoverStyle="true"

EnableEmbeddedSkins="False"

HeaderStyle-Wrap="False"

RenderMode="Lightweight"

HeaderStyle-ForeColor="White"

PageSize="10"

OnItemDataBound="RadGridRuleExemptions_ItemDataBound">

<PagerStyle Mode="NextPrevAndNumeric" />

<MasterTableView

AutoGenerateColumns="false"

DataKeyNames="Id"

SelectMethod="GetRuleExemptions"

InsertMethod="AddRuleExemption"

UpdateMethod="UpdateRuleExemption"

ItemType="RuleExemptions"

CommandItemDisplay="Top">

<CommandItemSettings />

<CommandItemTemplate>

<div class="text-right" style="background-color: transparent; padding: 5px 5px 5px 5px;">

<asp:Button

ID="btnAddRuleExemption"

runat="server"

CssClass="button button-teal button-medium"

Text="Add New Record"

CausesValidation="False"

CommandName="InitInsert" />

</div>

</CommandItemTemplate>

<Columns>

<telerik:GridButtonColumn

UniqueName="EditItem"

CommandName="Edit"

ItemStyle-Width="40"

ItemStyle-HorizontalAlign="Center"

ItemStyle-ForeColor="White"

Text="Edit"

ButtonType="LinkButton"

ButtonCssClass="button button-teal button-small">

<HeaderStyle Font-Bold="true" />

</telerik:GridButtonColumn>

<telerik:GridTemplateColumn UniqueName="Id" HeaderText="Id">

<ItemTemplate>

<asp:Label ID="lblId" runat="server" Text='<%# Item.Id %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="Category" HeaderText="Category">

<ItemTemplate>

<asp:Label ID="lblCategory" runat="server" Text='<%# Item.Category %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="RuleName" HeaderText="Rule Name">

<ItemTemplate>

<asp:Label ID="lblRuleName" runat="server" Text='<%# Item.RuleName %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="Version" HeaderText="Version">

<ItemTemplate>

<asp:Label ID="lblVersion" runat="server" Text='<%# Item.Version %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="NetworkId" HeaderText="Network Id">

<ItemTemplate>

<asp:Label ID="lblNetworkId" runat="server" Text='<%# Item.NetworkId %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="OperatorId" HeaderText="Operator Id">

<ItemTemplate>

<asp:Label ID="lblOperatorId" runat="server" Text='<%# Item.OperatorId %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn UniqueName="Justification" HeaderText="Justification">

<ItemTemplate>

<asp:Label ID="lblJustification" runat="server" Text='<%# Item.Justification %>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

<EditFormSettings EditFormType="Template">

<FormStyle />

<FormTemplate>

<div class="form-horizontal" style="margin-top: 15px;">

<%--Category--%>

<div class="form-group">

<label for="radDropDownCategory" class="col-md-2 control-label">Category <em class="requiredIndicator">*</em></label>

<div class="col-md-5">

<telerik:RadDropDownList runat="server"

ID="radDropDownCategory"

DataTextField="TextDescription"

DataValueField="Value"

RenderMode="Lightweight"

SelectMethod="GetCategories"

SelectedValue='<%# BindItem.Category %>'>

</telerik:RadDropDownList>

</div>

</div>

<%--Rule Name--%>

<div class="form-group">

<label for="txtRuleName" class="col-md-2 control-label">Rule Name <em class="requiredIndicator">*</em></label>

<div class="col-md-5">

<asp:TextBox ID="txtRuleName" runat="server" ClientIDMode="Static" Text='<%# BindItem.RuleName %>'

MaxLength="100"></asp:TextBox>

<asp:RequiredFieldValidator ID="rfvRuleName" runat="server" ClientIDMode="Static" ControlToValidate="txtRuleName"

ErrorMessage="Rule Name is Required" ValidationGroup="RuleExemptionGroup" CssClass="text-error" Display="Dynamic">

</asp:RequiredFieldValidator>

</div>

</div>

<%--Version--%>

<div class="form-group">

<label for="txtVersion" class="col-md-2 control-label">Version <em class="requiredIndicator">*</em></label>

<div class="col-md-3">

<asp:TextBox ID="txtVersion" runat="server" ClientIDMode="Static" Text='<%# BindItem.Version %>'

MaxLength="32"></asp:TextBox>

<asp:RequiredFieldValidator ID="rfvVersion" runat="server" ClientIDMode="Static" ControlToValidate="txtVersion"

ErrorMessage="Version is Required" ValidationGroup="RuleExemptionGroup" CssClass="text-error" Display="Dynamic">

</asp:RequiredFieldValidator>

</div>

</div>

<%--Network Id--%>

<div class="form-group">

<label for="txtNetworkId" class="col-md-2 control-label">Network Id</label>

<div class="col-md-3">

<asp:TextBox ID="txtNetworkId" runat="server" ClientIDMode="Static" Text='<%# BindItem.NetworkId %>'

MaxLength="32"></asp:TextBox>

</div>

</div>

<%--Operator Id--%>

<div class="form-group">

<label for="txtOperatorId" class="col-md-2 control-label">Operator Id</label>

<div class="col-md-3">

<asp:TextBox ID="txtOperatorId" runat="server" ClientIDMode="Static" Text='<%# BindItem.OperatorId %>'

MaxLength="32"></asp:TextBox>

</div>

</div>

<%--Justification--%>

<div class="form-group">

<label for="txtJustification" class="col-md-2 control-label">Justification <em class="requiredIndicator">*</em></label>

<div class="col-md-5">

<asp:TextBox ID="txtJustification" runat="server" ClientIDMode="Static" Text='<%# BindItem.Justification %>'

MaxLength="5000" TextMode="MultiLine" Rows="4"></asp:TextBox>

<asp:RequiredFieldValidator ID="rfvJustification" runat="server" ClientIDMode="Static" ControlToValidate="txtJustification"

ErrorMessage="Justification is Required" ValidationGroup="RuleExemptionGroup" CssClass="text-error" Display="Dynamic">

</asp:RequiredFieldValidator>

</div>

</div>

</div>

<div class="form-horizontal" style="margin-top: 15px;">

<%--Form Buttons--%>

<div class="form-group">

<label class="col-md-2 control-label"></label>

<div class="col-md-6">

<asp:Button ID="btnSave" runat="server" Text="Save" CssClass="button button-blue btn-md" CommandName="PerformInsert" CausesValidation="true" Visible="false" ValidationGroup="RuleExemptionGroup" />

<asp:Button ID="btnUpdate" runat="server" Text="Update" CssClass="button button-blue btn-md" CommandName="Update" CausesValidation="true" Visible="false" ValidationGroup="RuleExemptionGroup" />

<asp:Button ID="btnCancel" runat="server" Text="Cancel" CssClass="button button-orange btn-md" CommandName="Cancel" CausesValidation="false" />

</div>

</div>

</div>

</FormTemplate>

</EditFormSettings>

</MasterTableView>

</telerik:RadGrid>

Code behind:

public void AddRuleExemption()

{

var item = new RuleExemptions();

var context = new DomainContext();

var domainObject = new RuleExemptions(context);

TryUpdateModel(item);

var add = domainObject.AddRuleExemption(item);

if (!add.IsOperationSuccessful)

{

pnlErrorMessage.Visible = true;

lblErrorMessage.Text = add.OperationReturnMessage;

// I WANT TO KEEP THE EDITOR OPEN HERE...

}

else

{

lblErrorMessage.Text = "Operation Successful";

}

}

How can I keep the editor open the add operation was not successful? (Note the line // I WANT TO KEEP THE EDITOR OPEN HERE... above).

Please note that I am using Model Binding in this instance.

Thanks

1 Answer, 1 is accepted

0

answered on 20 Aug 2018, 12:11 PM

model-binding-validation-sample.zip

video.zip

Hello Angelo,

Could you try checking for the validation of the model state before performing the actual insert operation? If you don't perform the operation and there is a model state validation error, it would be shown in a validation summary or ModelErrorMessage control that you can provide. Here is an example of this: https://docs.telerik.com/devtools/aspnet-ajax/controls/grid/data-binding/model-binding-and-strongly-typed-data-controls-support#modelbinding-validation.

I am also attaching below a very simple example of how this works as expected (model-binding-validation-sample.zip). It does not have any actual CRUD operations logic, but it will suffice to show the validation approach.

Regards,
Marin Bratanov
Progress Telerik

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