griview删除多行数据

HTML:

<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridSign" runat="server" AutoGenerateColumns="False" 
            onselectedindexchanged="GridSign_SelectedIndexChanged" 
            DataSourceID="SqlDataSource1">
            <Columns>
                <asp:TemplateField>
                    <EditItemTemplate>
                        <asp:CheckBox ID="CheckBox1" runat="server" />
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:CheckBox ID="CheckBox1" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="ID">//绑定主键的列,可以隐藏
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("id") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="labid" runat="server" Text='<%# Bind("id") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="name" HeaderText="姓名" />
                <asp:BoundField DataField="sex" HeaderText="性别" />     
            </Columns>
        </asp:GridView>
        
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
            ConnectionString="<%$ ConnectionStrings:zhenji %>" 
            SelectCommand="SELECT * FROM [tryuser]"
             DeleteCommand="delete from [tryuser] where id=@id"
            >
            <DeleteParameters>
            <asp:Parameter  Type="String" Name="id"/>
            </DeleteParameters>
            </asp:SqlDataSource>
        <asp:Button ID="Button1" runat="server" Text="Delete" onclick="Button1_Click" /> 
    </div>
    </form>
</body>

后台C#：

protected void Button1_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridSign.Rows)
        {
            Label id = row.FindControl("labid") as Label;//将主键绑定在一列上
            CheckBox chkb=row.FindControl("CheckBox1") as CheckBox;
            if(chkb.Checked&&chkb!=null)
            {
            SqlDataSource1.DeleteParameters["id"].DefaultValue=id.Text;
            SqlDataSource1.Delete();
            }
        }
    }

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原文地址：https://www.cnblogs.com/fuge/p/2610447.html