如何在gridview中获取TextBox值的问题

Question

部分代码如下，前台输入值后，我在后台想获取 TextBox 的值,可获取的值总是空字符串 不知道怎么才能获取？TextBox textbox = (TextBox)this.GridView1.FooterRow.FindControl("lb_name");<asp:GridView ID="GridView1" runat="server"  />    
<Columns>
        <asp:TemplateField      
       <ItemTemplate></ItemTemplate>
        <FooterTemplate>
             <asp:TextBox ID="lb_name" runat="server" >
         </FooterTemplate>
        </asp:TemplateField>
<Columns>

Answer 1

foreach(RepeaterItem item in this.Repeater.Items)
{
CheckBox ck=(CheckBox)item.FindControl("Checkbox_issue");
if(ck.Checked)
{
HtmlInputHidden inputhidden = (HtmlInputHidden)item.FindControl("SelectedID");
PostID_checked +=inputhidden.Value.Trim()+",";
}
else
{
HtmlInputHidden inputhidden = (HtmlInputHidden)item.FindControl("SelectedID");
PostID_u_checked +=inputhidden.Value.Trim()+",";
}
}
这是3年前写的代码，你看看有没有用，希望能给你提供点思路

Answer 2

我是想 点击  <FooterTemplate>里的一个按钮 把数据保存起来
           

Answer 3

用这句this.GridView1.FooterRow.FindControl("lb_name");
已经取得了textbox控件 
就是获取不到值  

Answer 4

string textbox = ((TextBox)this.GridView1.footrow.FindControl("lb_name")).Text;

Answer 5

protected void Button2_Click(object sender, EventArgs e)
    {
        string s = ((TextBox)this.GridView1.FooterRow.FindControl("TextBox1")).Text;
        Response.Write(s);
    }

Answer 6

<asp:TextBox ID="lb_name" runat="server" >
//没赋值当然取不到。。
代码可以取得TextBox没问题。

Answer 7

这句可以讲gridview里的textbox数据取来

Answer 8

<asp:TextBox ID="lb_name" runat="server" Text="123">
随便给个值或绑定下字段，应该可以了。

Answer 9

奇怪的是我在  <FooterTemplate>
             <asp:TextBox ID="lb_name" runat="server" >
         </FooterTemplate>
里放了个dropdownlist它的值又可以取得 

Answer 10

TextBox少了结束标签。。
        <FooterTemplate>
             <asp:TextBox ID="lb_name" runat="server" ></asp:TextBox>
         </FooterTemplate>

Answer 11

加了 是我这里没写   我也给它的Text=""
还是不行

Answer 12

wxg22526451  
<asp:TextBox ID="lb_name" runat="server" Text="123"> 
这个可以获取到 但我无论怎么输入值 始终获取的都是123还有为什么下面的就不行呢  不可能一出来就加个默认值吧
<asp:TextBox ID="lb_name" runat="server" Text=""> 

Answer 13

protected void Button2_Click(object sender, EventArgs e)
    {
        string s = ((TextBox)this.GridView1.FooterRow.FindControl("TextBox1")).Text;
        Response.Write(s);
    }
这样S里有值么？应该没错的呀

Answer 14

楼上的 我还没有试
我要从CommandArgument获取参数
已经测试了protected void Button_Command事件也不行
也不行 像我在16楼描述的那样

Answer 15

没道理的。
如，另一个列的FooterTemplate里放个Button.<FooterTemplate>
           <asp:Button runat="server" ID="Btn" CommandName="MyCmd" Text="haha" />
</FooterTemplate>
<asp:TemplateField ShowHeader="False">
     <FooterTemplate>
         <asp:TextBox ID="lb_name" runat="server" />
     </FooterTemplate>
</asp:TemplateField>
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
       
        if (e.CommandName == "MyCmd")
            Response.Write(((TextBox)GridView1.FooterRow.FindControl("lb_name")).Text);
}完全没问题。你自己再仔细看看。

Answer 16

((textbox)gridview.rows[index].findcontrol("txtboxid")).text
这样就得到了

Answer 17

Response.Write（）
它的作用是？
还是获取不到  照样向前台输出了默认的值 而且把界面都搞乱了

Answer 18

你想保存数据 可以  激活gridview 自带的编辑   protected void WaterGridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        WaterGridView1.EditIndex = e.NewEditIndex;
    }
    protected void WaterGridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        // param1 param2通过模板列中的TextBox来传递
        string param1 = ((TextBox)WaterGridView1.Rows[e.RowIndex].FindControl("TextBox1")).Text;
        string param2 = ((TextBox)WaterGridView1.Rows[e.RowIndex].FindControl("TextBox2")).Text;
        string param3 = WaterGridView1.DataKeys[e.RowIndex].Value.ToString();
        DAL.T_ganz_tabdsTableAdapters.ganz_tabTableAdapter adp = new DAL.T_ganz_tabdsTableAdapters.ganz_tabTableAdapter();
        adp.UpdateQuery(param1,param2,param3);//一个更新方法 把数据更新的数据库中
        this.WaterGridView1.EditIndex = -1;
        //WaterGridView1与数据源绑定后         }
    protected void WaterGridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        this.WaterGridView1.EditIndex = -1;
     }

Answer 19

我不是要更新 我是利用footer模板 添加数据

Answer 20

呵呵 就是取不到啊
我重启了机器 清理了缓存 还是取不到
但是刚刚发现 我在点添加按钮(LinkBottom)的同时（反应速度有点满）发现textbox的值换原成默认值 再提交了 
不知道它怎么就把我输入的值 变成默认值了 
代码比较多 贴不了

Answer 21

那就试着在
Page_Load
{
    if(IsPostBack) //如果是回发
    {       
       ViewState["MyValue"] = ((TextBox)GridView1.FooterRow.FindControl("lbl_name")).Text;   
       ((TextBox)GridView1.FooterRow.FindControl("lbl_name")).Text = ViewState["MyValue"].ToString();
   } 
}
也就是在回发过程中把FooterRow的TextBox里的值存进ViewState。

Answer 22

gridview的代码如下<asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" Width="100%" AutoGenerateColumns="False" ShowFooter="True"  OnRowDataBound="GridView1_RowDataBound" OnRowCommand="GridView1_RowCommand">
                <FooterStyle BackColor="#C0C0FF" Font-Bold="True" ForeColor="White" HorizontalAlign="Left" />
                <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
                <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
                <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
                <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" HorizontalAlign="Left" />
                <EditRowStyle BackColor="#999999" />
                <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
                <Columns>                    
                    <asp:TemplateField HeaderText="栏目名称">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("briefingCell_name") %>'></asp:TextBox>
                        </EditItemTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label2" runat="server" Text='<%# Bind("briefingCell_name") %>'></asp:Label>
                        </ItemTemplate>
                        <FooterTemplate>
                          <asp:TextBox ID="lb_cellname" runat="server" Text="请输入栏目名" />
                        </FooterTemplate>
                    </asp:TemplateField>
                                        
                    <asp:TemplateField HeaderText="简报类型">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("briefingCell_ContentType") %>'></asp:TextBox>
                        </EditItemTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label3" runat="server" Text='<%# Bind("briefingCell_ContentType") %>'></asp:Label>
                        </ItemTemplate>
                        <FooterTemplate>
                            <asp:DropDownList ID="dropdown_bftp" runat="server" Width="100px" OnSelectedIndexChanged="dropdown_bftp_SelectedIndexChanged" AutoPostBack="True">
                                <asp:ListItem Value="栏目">栏目</asp:ListItem>
                                <asp:ListItem Value="图文">图文</asp:ListItem>
                                <asp:ListItem Value="图片">图片</asp:ListItem>
                            </asp:DropDownList>
                        </FooterTemplate>   
                    </asp:TemplateField>
                    
                     <asp:TemplateField HeaderText="单条简报">                        <ItemTemplate>
                           <asp:CheckBox ID="cb_sbriefing" runat="server"/>
                        </ItemTemplate>
                        <FooterTemplate>
                            <asp:DropDownList   ID="dropdown_singlebf" runat="server" Width="89px" >
                                <asp:ListItem Value="1">单条简报</asp:ListItem>
                                <asp:ListItem Value="0">多条简报</asp:ListItem>
                            </asp:DropDownList>
                        </FooterTemplate>
                    </asp:TemplateField>
                       <asp:TemplateField HeaderText="子栏目">
                        <ItemTemplate>
                         
                        </ItemTemplate>
                    </asp:TemplateField>
               
                     <asp:TemplateField HeaderText="父栏目">
                        <ItemTemplate>
                         
                        </ItemTemplate>
                    </asp:TemplateField>
                    
                    <asp:TemplateField ShowHeader="False">
                        <EditItemTemplate>
                            <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="True" CommandName="UpdateCell" CommandArgument='<%#Container.DataItemIndex.ToString()%>'
                                Text="更新"></asp:LinkButton>
                            <asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="CancelCell" CommandArgument='<%#Container.DataItemIndex.ToString()%>'
                                Text="取消"></asp:LinkButton>
                        </EditItemTemplate>
                        
                        <ItemTemplate>
                            <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="EditCell" CommandArgument='<%#Container.DataItemIndex.ToString()%>'
                                Text="编辑栏目"></asp:LinkButton>
                            <asp:LinkButton ID="lb_del" runat="server" CausesValidation="False" CommandName="DelCell" CommandArgument='<%#Container.DataItemIndex.ToString()%>'
                                Text="删除"></asp:LinkButton>
                        </ItemTemplate>
                        
                        <FooterTemplate>
                            <asp:LinkButton ID="lb_add" runat="server" Width="30px"  CommandName="insert" CommandArgument="">添加</asp:LinkButton>
                        </FooterTemplate>
                    </asp:TemplateField>
                </Columns>
            </asp:GridView>后台
        private void addCell(object sender, GridViewCommandEventArgs e)
        {
            int pid = Convert.ToInt32(e.CommandArgument);
            HNS.Model.briefingCell bfc = new HNS.Model.briefingCell();
            string cellname = ((TextBox)this.GridView1.FooterRow.FindControl("lb_cellname")).Text;
           // Response.Write(cellname);
            DropDownList dp1=(DropDownList)this.GridView1.FooterRow.FindControl("dropdown_bftp");
            DropDownList dp2 = (DropDownList)this.GridView1.FooterRow.FindControl("dropdown_singlebf");
            string dptype = dp1.SelectedValue;
            bool dpsingle = dp2.SelectedValue=="1"?true:false;
            bfc.briefingCell_pid = pid;
            bfc.briefingCell_ContentType = dptype;
            bfc.briefingCell_SingleContent = dpsingle;
            bfc.briefingCell_name = cellname;
            if (HNS.BLLFactory.BLLAccess.CreatebriefingCell().add(bfc))
            {
                ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('添加成功'); </script>");
                bindgv();
            }
            else
            {
                ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert('添加失败');history.go(-1); </script>");
            }
        }

Answer 23

FooterRow ? 你用的是2008?

Answer 24

给你的按钮加个commandname在...._RowCommand事件中
if(e.CommandName.Trim().ToLower() == "insert"){
   //根据这个按钮得到其所在Row. 
   GridViewRow obj = (GridViewRow)((LinkButton)e.CommandSource).Parent.Parent; 
   string str = ((TextBox)obj.FindControl("....")).Text; 
   ......
}

Answer 25

一般的...尽量不要用insert, delete, update, cancel 给你自定义的commandname, 这种复杂控件很可能会固定这种commandname名称以引发固定的事件, 或者引起不必要的麻烦.

Answer 26

你是不是在页面加载事件里对这个lbl_name有初始化呀

Answer 27

我把insert改成AddCell还是取不到

Answer 28

我点一下底下的滚动条 怎么也给我刷新 
还有我在
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
方法里也写了些东西 但没有处理和这相关的任何东西
会和这里有关系吗
   

Answer 29

逐步调试
到DropDownList dp1=(DropDownList)this.GridView1.FooterRow.FindControl("dropdown_bftp");
看看cellname值

Answer 30

还有一个办法你也试试吧
就是转换的时候不用FindControl
用Controls[i]
i代表控件索引

Answer 31

:O, 怀疑......增加DataKeyNames

Answer 32

晕了 问题解决了  绑定gridview的时候没加下面这句  呵呵 不好意思 
if(!this.IsPostBack)
         谢谢大家的热情

Answer 33

还有一个小问题  顺便帮我解决下  我想在点击第一个dropdownlist的时候隐藏第二个 不知道为什么 隐藏不了     protected void dropdown_bftp_SelectedIndexChanged(object sender, EventArgs e)
        {
            DropDownList dptype=((DropDownList)this.GridView1.FooterRow.FindControl("dropdown_bftp"));
            DropDownList dpsingle = ((DropDownList)this.GridView1.FooterRow.FindControl("dropdown_singlebf"));            if (dptype.SelectedValue.Trim() == "栏目")
            {
                this.GridView1.FooterRow.Cells[3].Visible = false;            }
            else
            {
                this.GridView1.FooterRow.Cells[3].Visible = true;
            }
        }

Answer 34

可以的..
确保你给gridView绑定数据时放到if(!IsPostBack)中

Answer 35

你要先找到TextBox所在的行，然后FindControl

Answer 36

string str = ((TextBox)this.GridView1.FooterRow.FindControl("lb_name")).Text;

Answer 37

string s = ((TextBox)this.GridView1.FooterRow.FindControl("TextBox1")).Text;

Answer 38

继续关注本贴，我也碰到了同样问题，点击Gtidview外的按钮，页面一刷，Textbox中的内容全都没了，难道只能用Session？希望能有高手解决。

Answer 39

 Page_Load  增加 if (!Page.IsPostBack) 就ok了

Answer 40

我靠，我也遇到这个问题了，一模一样，也是!IsPostBack 没写，崩溃