如何从gridview页脚c＃中的文本框获取值？

Question

like in title + how to handle button click which button is in GridView Footer also?

file .aspx seems like this

<asp:GridView ID="GridView1" runat="server"
     AutoGenerateColumns="False" 
        CellPadding="4" DataKeyNames="id" EnableModelValidation="True" 
        ForeColor="#333333" GridLines="None" 
        onrowcancelingedit="GridView1_RowCancelingEdit1" 
        onrowediting="GridView1_RowEditing1" 
        onrowupdating="GridView1_RowUpdating1" AllowPaging="True" 
        onrowdeleting="GridView1_RowDeleting" 
        onpageindexchanging="GridView1_PageIndexChanging" Height="322px" 
        ShowFooter="True" onselectedindexchanged="GridView1_SelectedIndexChanged" >
        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        <Columns>
            <asp:CommandField ShowEditButton="True" />
            <asp:BoundField DataField="id" HeaderText="ID" Visible="False" />
            <asp:BoundField DataField="Name" HeaderText="Name" />
            <asp:TemplateField>
                <FooterTemplate>
                    <asp:TextBox ID="txtName" runat="server" />
                </FooterTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="LastName" HeaderText="LastName" />
            <asp:TemplateField>
                <FooterTemplate>
                    <asp:TextBox ID="txtLastName" runat="server" />
                </FooterTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="DriveLic" HeaderText="DriveLicense" />
            <asp:TemplateField>
                <FooterTemplate>
                    <asp:TextBox ID="txtDriveLicense" runat="server" />
                </FooterTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="country" HeaderText="Country" />
            <asp:TemplateField>
                <FooterTemplate>
                    <asp:TextBox ID="txtWoj" runat="server" />
                </FooterTemplate>
            </asp:TemplateField>
            <asp:CommandField ShowDeleteButton="True" />
            <asp:TemplateField>
                <FooterTemplate>
                    <asp:Button ID="ButtonOK" Text="Confirm" runat="server" />
                </FooterTemplate>
            </asp:TemplateField>
        </Columns>

Answer 1

Inside your GridView_RowCommand Event you can access the footer control by GridView1.FooterRow.FindControl method.

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName.Equals("Insert", StringComparison.OrdinalIgnoreCase))
    {
        TextBox txtSomeNewValue = ((TextBox)GridView1.FooterRow.FindControl("txtSomeNewValue"));
        string theTextValue = txtSomeNewValue.Text;
    }
}

Update: wrapped the code in an if block that checks if the commandname is what you were expecting. This event is also used for delete, edit, etc, so you might end up running the code for an event you didnt intend if you dont wrap it in this.