DataGridView增加新行的问题

Question

就是要在指定的位置增加新行，不要在最后增加。网上这样的帖子也没好的回答，请高手帮忙。

Answer 1

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("str1") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox2" runat="server" Text='<%# Eval("str2") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox3" runat="server" Text='<%# Eval("str3") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="增加行" />
                        <asp:Button ID="Button2" runat="server" Text="删除行" onclick="Button2_Click" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("str1");
            dt.Columns.Add("str2");
            dt.Columns.Add("str3");
            for (int i = 0; i < 5; i++)
            {
                DataRow dr = dt.NewRow();
                dt.Rows.Add(dr);
            }
            this.GridView1.DataSource = dt;
            this.GridView1.DataBind();
        }
    }    protected void Button1_Click(object sender, EventArgs e)
    {
        // 行号
        int row = ((GridViewRow)((Button)sender).NamingContainer).RowIndex;
        DataTable dt = new DataTable();
        dt.Columns.Add("str1");
        dt.Columns.Add("str2");
        dt.Columns.Add("str3");
        foreach (GridViewRow item in this.GridView1.Rows)
        {
            DataRow dr = dt.NewRow();
            dr["str1"] = ((TextBox)item.Cells[0].FindControl("TextBox1")).Text;
            dr["str2"] = ((TextBox)item.Cells[0].FindControl("TextBox2")).Text;
            dr["str3"] = ((TextBox)item.Cells[0].FindControl("TextBox3")).Text;
            dt.Rows.Add(dr);
        }
        dt.Rows.InsertAt(dt.NewRow(), row+1);
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }    protected void Button2_Click(object sender, EventArgs e)
    {
        // 行号
        int row = ((GridViewRow)((Button)sender).NamingContainer).RowIndex;
        DataTable dt = new DataTable();
        dt.Columns.Add("str1");
        dt.Columns.Add("str2");
        dt.Columns.Add("str3");
        foreach (GridViewRow item in this.GridView1.Rows)
        {
            DataRow dr = dt.NewRow();
            dr["str1"] = ((TextBox)item.Cells[0].FindControl("TextBox1")).Text;
            dr["str2"] = ((TextBox)item.Cells[0].FindControl("TextBox2")).Text;
            dr["str3"] = ((TextBox)item.Cells[0].FindControl("TextBox3")).Text;
            dt.Rows.Add(dr);
        }
        dt.Rows.RemoveAt(row);
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }

Answer 2

绑定DataGridView的table有Rows.InsertAt(Row,Index),可以加到任意位置，然后重新绑定到DataGridView可实现你要的效果

Answer 3

    protected void Button1_Click(object sender, EventArgs e)
    {
        // 行号
        int row = ((GridViewRow)((Button)sender).NamingContainer).RowIndex;
        DataTable dt = new DataTable();
        dt.Columns.Add("str1");
        dt.Columns.Add("str2");
        dt.Columns.Add("str3");
        foreach (GridViewRow item in this.GridView1.Rows)
        {
            DataRow dr = dt.NewRow();
            dr["str1"] = ((TextBox)item.Cells[0].FindControl("TextBox1")).Text;
            dr["str2"] = ((TextBox)item.Cells[1].FindControl("TextBox2")).Text;
            dr["str3"] = ((TextBox)item.Cells[2].FindControl("TextBox3")).Text;
            dt.Rows.Add(dr);
        }
        dt.Rows.InsertAt(dt.NewRow(), row+1);
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }    protected void Button2_Click(object sender, EventArgs e)
    {
        // 行号
        int row = ((GridViewRow)((Button)sender).NamingContainer).RowIndex;
        DataTable dt = new DataTable();
        dt.Columns.Add("str1");
        dt.Columns.Add("str2");
        dt.Columns.Add("str3");
        foreach (GridViewRow item in this.GridView1.Rows)
        {
            DataRow dr = dt.NewRow();
            dr["str1"] = ((TextBox)item.Cells[0].FindControl("TextBox1")).Text;
            dr["str2"] = ((TextBox)item.Cells[1].FindControl("TextBox2")).Text;
            dr["str3"] = ((TextBox)item.Cells[2].FindControl("TextBox3")).Text;
            dt.Rows.Add(dr);
        }
        dt.Rows.RemoveAt(row);
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }