Javascript 从ASP Gridview中的Inputbox获取输入值

我有一个包含3个templatefield列的gridview。当gridview进行数据绑定时，将在放置占位符的模板字段中生成一个输入文本框

问题是，是否可以在回发时从代码隐藏文件的输入框中获取值？还是需要用js在客户端完成

这是gridview的精简版本：

<asp:GridView ID="GV" runat="server" 
    AutoGenerateColumns="False" CellPadding="3"
    DataSourceID="DS" Font-Size="X-Small" Width="100%" BackColor="White" CellSpacing="1"
    BorderColor="#333333" BorderStyle="Inset" BorderWidth="1px" 
    ShowFooter="True" ondatabound="GV_DataBound"
    <AlternatingRowStyle BackColor="White" />
    <Columns>
        <asp:TemplateField>
            <HeaderTemplate>
            </HeaderTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="SKILL" HeaderText="Skill" HtmlEncode="False" SortExpression="SKILL">
        </asp:BoundField>
        <asp:BoundField DataField="COMP_GEN" HeaderText="Competencies (General)" HtmlEncode="False"
            SortExpression="COMP_GEN">
        </asp:BoundField>
        <asp:TemplateField HeaderText="Designer Score">
            <ItemTemplate>
                <asp:PlaceHolder runat='server' ID="devGenDesScore"></asp:PlaceHolder>                        
            </ItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="devGenDesScoreTotal_txt" name="inputs" runat="server" Width="50px"></asp:TextBox>
            </FooterTemplate>
        </asp:TemplateField>
    </Columns>
    <FooterStyle BackColor="#C6C3C6" ForeColor="Black" />
    <HeaderStyle BackColor="#005293" Font-Bold="True" ForeColor="white" BorderColor="Gray"
        BorderStyle="Solid" BorderWidth="1px" />
    <PagerStyle BackColor="#C6C3C6" ForeColor="Black" HorizontalAlign="Right" />
    <RowStyle BackColor="White" ForeColor="#253E51" />
    <SelectedRowStyle BackColor="#9471DE" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#F1F1F1" />
    <SortedAscendingHeaderStyle BackColor="#594B9C" />
    <SortedDescendingCellStyle BackColor="#CAC9C9" />
    <SortedDescendingHeaderStyle BackColor="#33276A" />
</asp:GridView>

它在int compGenDesScore=Convert….上抛出此错误。。。。行： System.NullReferenceException:对象引用未设置为对象的实例

这是我生成输入框的方式：

protected void GV_DataBound(object sender, EventArgs e)
{
    int c = GV.Columns.Count;
    int r = GV.Rows.Count;
    //Loop through each row
    for (int i = 0; i < r; i++)
    {
        //Loop through each column on that row
        for (int j = 0; j < c; j++)
        {
            //First competancy
            if (j == 2)
            {
                //Read the contents of the cell, if its blank, do nothing. If it has text, add a textbox for the score
                contents = GV.Rows[i].Cells[j].Text;
                if (contents != "&nbsp;")
                {
                    PlaceHolder placeHolder = GV.Rows[i].FindControl("devGenDesScore") as PlaceHolder;
                    TextBox devGenDesScore_txt = new TextBox();
                    devGenDesScore_txt.ID = "devGenDesScore_txt";
                    devGenDesScore_txt.Style.Add("width", "50px");
                    placeHolder.Controls.Add(devGenDesScore_txt);
                }
            }
        }
    }
}

你试过这个吗

---

TextBox compGenDesScoreTxt=GV.Rows[i]。单元格[3]。FindControlId

找到了答案。这与GV的数据绑定有关。我使用占位符，然后在需要的地方用输入字段替换它们。相反，我将输入文本字段直接放在aspx页面的模板字段中，并将可见性设置为false。然后，在databind事件中，我将需要显示的字段设置为true

---

将来可能会对某人有所帮助。

能否尝试查找textbox控件，字符串x=TextBoxGV.Rows[i].FindControldevGenDesScore.Text；抛出相同的错误。可能与文本框ID有关？我在问题中添加了更多代码，解释如何生成文本字段。传递给FindControl的ID应该是创建控件时分配给它的ID。再次尝试Anurag的代码，但使用正确的ID。当我尝试Anurag的代码时，我使用了创建字段时指定的ID，即字符串x=TextBoxGV.Rows[I]。FindControldevGenDesScore_txt.Text；

protected void GV_DataBound(object sender, EventArgs e)
{
    int c = GV.Columns.Count;
    int r = GV.Rows.Count;
    //Loop through each row
    for (int i = 0; i < r; i++)
    {
        //Loop through each column on that row
        for (int j = 0; j < c; j++)
        {
            //First competancy
            if (j == 2)
            {
                //Read the contents of the cell, if its blank, do nothing. If it has text, add a textbox for the score
                contents = GV.Rows[i].Cells[j].Text;
                if (contents != "&nbsp;")
                {
                    PlaceHolder placeHolder = GV.Rows[i].FindControl("devGenDesScore") as PlaceHolder;
                    TextBox devGenDesScore_txt = new TextBox();
                    devGenDesScore_txt.ID = "devGenDesScore_txt";
                    devGenDesScore_txt.Style.Add("width", "50px");
                    placeHolder.Controls.Add(devGenDesScore_txt);
                }
            }
        }
    }
}