how can i adjust gridview header ? asp.net c#

Question

I have a gridview which contains EditItemTemplate and ItemTemplate but gridview header not adjusting.How can i adjust my gridview header . Here is my gridview

Here is my aspx.cs code :

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
       Enableviewstate="False" Width="1000px" CellPadding="2" ForeColor="#333333"  AllowPaging="true" Height="400px" DataKeyNames="User_ID" onrowcancelingedit="GridView1_RowCancelingEdit" 
        onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing" 
        onrowupdated="GridView1_RowUpdated" onrowupdating="GridView1_RowUpdating" >

        <Columns>
            <asp:TemplateField AccessibleHeaderText="User_ID" HeaderText="User_ID">
                <EditItemTemplate>
                    <asp:TextBox ID="TXT_ID" runat="server" Text='<%# Eval("User_ID") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="txt_id" runat="server" Text='<%# Eval("User_ID") %>'></asp:Label>
                </ItemTemplate>

            </asp:TemplateField>
            <asp:TemplateField AccessibleHeaderText="Name   " HeaderText="Name">
                <EditItemTemplate>
                    <asp:TextBox ID="TXT_NAME" runat="server" Text='<%# Eval("Name") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="txtName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField AccessibleHeaderText="User_Name" HeaderText="User_Name">
                <EditItemTemplate>
                    <asp:TextBox ID="TXT_USERNAME" runat="server" Text='<%# Eval("User_Name") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="txt_username" runat="server" Text='<%# Eval("User_Name") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField AccessibleHeaderText="Email" HeaderText="Email">
                <EditItemTemplate>
                    <asp:TextBox ID="TXT_EMAIL" runat="server" Text='<%# Eval("Email") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="txt_email" runat="server" Text='<%# Eval("Email") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField AccessibleHeaderText="Password" HeaderText="Password">
                <EditItemTemplate>
                    <asp:TextBox ID="TXT_PASSWORD" runat="server" Text='<%# Eval("Password") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="txt_password" runat="server" Text='<%# Eval("Password") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField AccessibleHeaderText="Date" HeaderText="Date">
                <EditItemTemplate>
                    <asp:TextBox ID="TXT_DATE" runat="server" Text='<%# Eval("Date") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="txt_Date" runat="server" Text='<%# Eval("Date") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:CommandField ShowEditButton="True" />
            <asp:CommandField ShowDeleteButton="True" />
        </Columns>
         <HeaderStyle HorizontalAlign="Left" CssClass="header" BackColor="#7961da"
                                                            Font-Bold="True" ForeColor="White" />       
        <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
    </asp:GridView>

</div>
</form>

Answer 1

You can use the alignment properties of the header for each field:

<asp:TemplateField HeaderStyle-HorizontalAlign="Left" HeaderStyle-VerticalAlign="Middle">
    ...
</asp:TemplateField>

If you need more control on the output, you can also create a HeaderTemplate:

<asp:TemplateField>
    <HeaderTemplate>
        <asp:Label runat="server" Text="..." />
        ...
    </HeaderTemplate>
    ...
</asp:TemplateField>