GridView 删除

Question

前台<asp:TemplateField ShowHeader="False" HeaderText="删除">
                            <ItemTemplate>
                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" 
                                    CommandName="del" OnClientClick="javascript:return confirm('确定删除吗？')"
                                    Text="删除"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:TemplateField> 
后台protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        int index = int.Parse(e.CommandArgument.ToString());//调试，到这里出错，输入字符串的格式不正确
        int id = int.Parse(this.GridView1.DataKeys[index].Value.ToString());
        try
        {
            if (e.CommandName == "del")
            {
                OracleConnection conn = new OracleConnection(ConnectionString);
                string str = "delete from message where id = " + id + "";
                OracleCommand com = new OracleCommand(str, conn);
                conn.Open();
                com.ExecuteNonQuery();
                conn.Close();
            }
        }
        catch 
        {
            
        }
    }求大神解答

Answer 1

你看看 CommandArgument 值是什么，估计不能专为int

Answer 2

<asp:TemplateField ShowHeader="False" HeaderText="删除">
                            <ItemTemplate>
                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" 
                                    CommandName="del" 
CommandArgument="<%# ((GridViewRow) Container).RowIndex %>"OnClientClick="javascript:return confirm('确定删除吗？')"
                                    Text="删除"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:TemplateField>  />

Answer 3

<asp:ButtonField CommandName="Edit" HeaderText="查看" Text="查看" 
                ItemStyle-Width="50px" >
<ItemStyle Width="50px"></ItemStyle>
            </asp:ButtonField>
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        int index = int.Parse(e.CommandArgument.ToString());
        int id = int.Parse(this.GridView1.DataKeys[index].Value.ToString());
        try
        {
            if (e.CommandName == "Edit")
            {
                Response.Redirect("message.aspx?id=" + id + "");
            }
        }
        catch 
        {
          
        }
    }这样是没有问题的，是因为ButtonField？

Answer 4

你的CommandArgument没有值..
2楼是正解,先绑定上值再取

Answer 5

CommandArgument是传的值，你这样：
前台<asp:TemplateField ShowHeader="False" HeaderText="删除">
                            <ItemTemplate>
                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" 
                                    CommandName="del" CommandArgument='"<%Eval("ID")%>"' OnClientClick="javascript:return confirm('确定删除吗？')"
                                    Text="删除"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:TemplateField> 后台protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        //int index = int.Parse(e.CommandArgument.ToString());//调试，到这里出错，输入字符串的格式不正确
        int id = int.Parse(e.CommandArgument.ToString());
        try
        {
            if (e.CommandName == "del")
            {
                OracleConnection conn = new OracleConnection(ConnectionString);
                string str = "delete from message where id = " + id + "";
                OracleCommand com = new OracleCommand(str, conn);
                conn.Open();
                com.ExecuteNonQuery();
                conn.Close();
            }
        }
        catch 
        {
            
        }
    }Button有CommandArgument这个属性，LinkButton不知道有没有，没有的话你换成Button就行了