I have a Gridview in which I want to add a row when the grid is empty using EmptyDataTemplate. The problem is when the grid is empty and I try to add a row, no error occurs but the data row is not added. The Header row is added but not the data. When I put a breakpoint at the start of the RowCommand method, it is not triggered. I can't understand why the event will not trigger. When there is a row present the RowCommand event is triggered and I can add a second row but not an initial row. This is my markup:
<asp:GridView ID="UserGroupGridView" runat="server" AutoGenerateColumns="False"
Caption="Group Information" CaptionAlign="Top" CssClass="grid"
AllowPaging="true" PageSize="10"
HorizontalAlign="Left" ShowHeaderWhenEmpty="True" ShowFooter="true" DataKeyNames="GroupID"
onrowcommand="UserGroupGridView_RowCommand">
<Columns>
<asp:TemplateField HeaderText="GroupID">
<ItemTemplate>
<asp:Label ID="uggvLblGroupID" runat="server" Text='<%# Bind("GroupID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Group Name">
<HeaderTemplate> Group Name
<asp:ImageButton ID="uggvGroupFilter" runat="server" ImageUrl="Images/filter.png" OnClientClick="return ShowHideFilterTxtBox('uggvTxtNameFilter')" />
<asp:TextBox ID="uggvTxtNameFilter" runat="server" AutoPostBack="true" style="display:none;" ClientIDMode="Static" OnTextChanged="uggvGridFilter_TextChanged">
</asp:TextBox>
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="uggvLblGroupName" runat="server" Text='<%# Bind("GroupName") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="uggvTxtBoxEditGroupName" runat="server" Text='<%# Bind("GroupName") %>'></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldEditGroupName" ControlToValidate="uggvTxtBoxEditGroupName" runat="server"
ErrorMessage="Required field." ValidationGroup="EditGroupNameValidation" Display="Dynamic" CssClass="message-error">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="MaxValEditGroupName" ControlToValidate="uggvTxtBoxEditGroupName" runat="server"
ErrorMessage="Maximumn length is 80." ValidationGroup="EditGroupNameValidation" Display="Dynamic" CssClass="message-error"
ValidationExpression="^.{1,80}$" >
</asp:RegularExpressionValidator>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="uggvTxtBoxInsertGroupName" runat="server" Text='<%# Bind("GroupName") %>' ClientIDMode="Predictable"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldInsertGroupName" ControlToValidate="uggvTxtBoxInsertGroupName" runat="server"
ErrorMessage="Required field." ValidationGroup="InsertGroupNameValidation" Display="Dynamic" CssClass="message-error">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="MaxValInsertGroupName" ControlToValidate="uggvTxtBoxInsertGroupName" runat="server"
ErrorMessage="Maximumn length is 80." ValidationGroup="InsertGroupNameValidation" Display="Dynamic" CssClass="message-error"
ValidationExpression="^.{1,80}$" >
</asp:RegularExpressionValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Action" ItemStyle-Wrap="false" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:Button ID="uggvEditButton" runat="server" CausesValidation="False" CommandName="Edit"
Text="Edit" CssClass="gridActionbutton">
</asp:Button>
<asp:Button ID="uggvDeleteButton" runat="server" CausesValidation="False" CommandName="Delete"
Text="Delete" CssClass="gridActionbutton" OnClientClick="return confirm('Are you sure you want to delete this Group Information?')" >
</asp:Button>
</ItemTemplate>
<EditItemTemplate>
<asp:Button ID="uggvUpdateButton" runat="server" CausesValidation="True" ValidationGroup="EditGroupNameValidation" CommandName="Update"
Text="Update" CssClass="gridActionbutton"></asp:Button>
<asp:Button ID="uggvCancelButton" runat="server" CausesValidation="False" CommandName="Cancel"
Text="Cancel" CssClass="gridActionbutton"></asp:Button>
</EditItemTemplate>
<FooterTemplate>
<asp:Button ID="uggvAddButton" runat="server" CommandName="Add" Text="Add Group" Width="90%" CausesValidation="true"
CssClass="gridActionbutton" ValidationGroup="InsertGroupNameValidation">
</asp:Button>
</FooterTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
<tr>
<th>GroupID</th>
<th>Group Name</th>
<th>Action</th>
</tr>
<tr>
<td colspan="3" style="text-align:center;">
No user-defined groups were found for you. Insert a group name and click the 'Add Group' Button.
</td>
</tr>
<tr>
<td></td>
<td>
<asp:TextBox ID="uggvTxtBoxInsertGroupName" runat="server" Width="90%"></asp:TextBox>
</td>
<td>
<asp:Button ID="uggvAddButtonEmpty" runat="server" CommandName="Add" Text="Add Group" Width="90%" CausesValidation="false"
CssClass="gridActionbutton">
</asp:Button>
</td>
</tr>
</EmptyDataTemplate>
</asp:GridView>
This is my RowCommand event:
protected void UserGroupGridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
try
{
if (e.CommandName.Equals("Add"))
{
//Get the Footer controls that have the new entry data
Control tFooterControls = CommonMethods.getFooterControls(UserGroupGridView);
string tstrGroupName = (tFooterControls.FindControl("uggvTxtBoxInsertGroupName") as TextBox).Text;
string tstrLoginUserID = CommonMethods.ParseUserID(User.Identity.Name);
//Insert into the database
m_pagingClient.InsertGroup(m_strUserID, tstrGroupName, tstrLoginUserID);
//Rebind the grid with the new data
populateGroupGrid();
}
}
catch (Exception ex)
{
logger.ErrorException(ex.Message, ex);
Response.Redirect("~/Error.aspx?use=" + m_strUserType, false);
}
}
This grid is the parent grid of a nested grid. But I don't think that should matter.
Can anyone see what I am doing wrong?
Thanks.
UPDATE Below is the validation that I had in the emptytemplatedata control
<EmptyDataTemplate>
<tr>
<th></th>
<th>GroupID</th>
<th>Group Name</th>
<th>Action</th>
</tr>
<tr>
<td colspan="4" style="text-align:center;">
No user-defined groups were found for you. Insert a group name and click the 'Add Group' Button.
</td>
</tr>
<tr>
<td></td>
<td></td>
<td>
<asp:TextBox ID="uggvTxtBoxInsertGroupName" runat="server" Width="90%"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldInsertGroupNameEmpty" ControlToValidate="uggvTxtBoxInsertGroupName" runat="server"
ErrorMessage="Required field." ValidationGroup="InsertGroupNameValidationEmpty" Display="Dynamic" CssClass="message-error">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="MaxValInsertGroupNameEmpty" ControlToValidate="uggvTxtBoxInsertGroupName" runat="server"
ErrorMessage="Maximumn length is 80." ValidationGroup="InsertGroupNameValidationEmpty" Display="Dynamic" CssClass="message-error"
ValidationExpression="^.{1,80}$" >
</asp:RegularExpressionValidator>
</td>
<td>
<asp:Button ID="uggvAddButtonEmpty" runat="server" CommandName="Add" Text="Add Group" Width="90%" CausesValidation="true"
CssClass="gridActionbutton" ValidationGroup="InsertGroupNameValidationEmpty">
</asp:Button>
</td>
</tr>
</EmptyDataTemplate>
Why would the required validation trigger after I added a value in the text box? UPDATE This is my Page_Load code:
protected void Page_Load(object sender, EventArgs e)
{
try
{
if (!IsPostBack)
{
populateGroupGrid();
if (m_strUserID.Equals("Global"))
{
UserGroupGridView.Caption = "Global Group Information";
}
else
{
UserGroupGridView.Caption = "User Group Information";
}
}
}
catch (Exception ex)
{
logger.ErrorException(ex.Message, ex);
Response.Redirect("~/Error.aspx?use=" + m_strUserType, false);
}
}
This is my grid populate method.
private void populateGroupGrid()
{
try
{
HiddenField hdnFldFilter = (HiddenField)UserGroupGridWrapper.FindControl("uggvHidGridFilter");
m_strXmlTableData = m_pagingClient.GetGroups(m_strUserID);
m_dtGroupInfo = CommonMethods.ParseXML(m_strXmlTableData);
ViewState["GroupInfo"] = m_dtGroupInfo;
if (!String.IsNullOrEmpty(hdnFldFilter.Value))
{
m_dtGroupInfo.DefaultView.RowFilter = hdnFldFilter.Value;
}
UserGroupGridView.DataSource = m_dtGroupInfo;
UserGroupGridView.DataBind();
}
catch (Exception ex)
{
logger.ErrorException(ex.Message, ex);
Response.Redirect("~/Error.aspx?use=" + m_strUserType, false);
}
}
