在gridview行中查找控件 [英] Finding a control inside a gridview row

问题描述

大家好，

最近2个小时，我一直在寻找解决方案，但没有成功.我有一个gridview，并且在此视图中有一个templatefield.我正在尝试访问此网格内的文本框.这是设计器中用于gridview的代码:

Hello all,

I have been trying to find a solution to it for the last 2 hours but I am not successful. I have a gridview and inside this view I have a templatefield. I am trying to access a textbox inside this grid. Here is the code in the designer for gridview:

<asp:GridView ID="gvExcParts" runat="server" AutoGenerateColumns="False" BorderStyle="None" BorderWidth="0px" CellPadding="4" CellSpacing="2"
UseAccessibleHeader="False" Width="950px" onrowdatabound="gvSelectedItems_RowDataBound" Visible="False" OnRowEditing="gvExcParts_RowEditing" 
                    OnRowCancelingEdit="gvExcItems_RowCancelingEdit" OnRowUpdating="gvExcItems_RowUpdating" OnRowDeleting="gvExcItems_RowDeleting"
                    onrowcommand="gvExcItems_RowCommand" AllowSorting="true" AutoGenerateEditButton="true">
                    <RowStyle BackColor="#EEEEEE" BorderColor="White" BorderStyle="Solid"
                        BorderWidth="2px" />
                    <Columns>
   <asp:TemplateField HeaderText="Part Quantity" >
                        <ItemTemplate > <%#Eval("RMAPartQty")%>
                        </ItemTemplate>
                            <EditItemTemplate>
                                <asp:TextBox ID="txtRMAPartQuantity" runat="server" width="60px" Text='<%#Eval("RMAPartQty")%>'></asp:TextBox>
                                <asp:FilteredTextBoxExtender ID="ftbeQtyEdit" runat="server" TargetControlID="txtRMAPartQuantity" ValidChars="1234567890" />
                            </EditItemTemplate>
                        </asp:TemplateField>
</Columns>
                    <HeaderStyle BackColor="#CCCCCC" BorderColor="Black" BorderStyle="Solid"
                        BorderWidth="1px" Font-Bold="True" />
                    <EditRowStyle BackColor="#EEEEEE" />
                    <AlternatingRowStyle BackColor="#EFEFEF" />
                </asp:GridView>

我正在尝试读取"txtRMAPartQuantity"的值.我的代码是:

I am trying to read the value of "txtRMAPartQuantity". My code for it is:

for (int i = 0; i < gvExcParts.Rows.Count; i++)
{
  string t1 = gvExcParts.Rows[i].Cells[1].Text;
  TextBox txtQtyval1 = (TextBox)gvExcParts.Rows[i].Cells[1].FindControl("txtRMAPartQuantity");
  TextBox txtQtyval2 = gvExcParts.Rows[i].FindControl("txtRMAPartQuantity") as TextBox;
}

在我的gvExcItems_RowUpdating事件上，我使用相同的FindControl()方法，它成功返回了值.但是在我的页面加载中，无论我尝试什么，该值始终为null.我做错了什么，有人可以帮忙吗?

On my gvExcItems_RowUpdating event I am using the same FindControl() method and it successfully returns the value. But in my page load no matter what I try the value is always null. What I am doing wrong can someone help me?

推荐答案

请确保在将其绑定到数据后，遍历gridview行.

Make sure you iterate through your gridview rows after you bind it to data.

protected void Page_Load(object sender, EventArgs e)
       {

           if(!Page.IsPostBack)
           {

               gvExcParts.DataSource = yourDataSource;
               gvExcParts.DataBind();
               for (int i = 0; i < gvExcParts.Rows.Count; i++)
               {
                 TextBox text = (TextBox)gvExcParts.Rows[i].FindControl("txtRMAPartQuantity");
               }

          }
    }

检查这些博客
访问GridView控件内的不同控件 [ http://stackoverflow.com/questions/1965835/find-control-inside-grid-row [^ ]
--NDK

check these blogs
Accessing the different controls inside a GridView control[^]
http://stackoverflow.com/questions/1965835/find-control-inside-grid-row[^]
--NDK

尝试此代码...
这里h是行号

int h = 0;
TextBox nt =(TextBox)Gridview1.Rows [h] .Cells [1] .FindControl("txt_Product_Name");
字符串myVal = nt.Text;

通过使用FindControl方法，您可以选择网格视图内任何控件的值.

享受:)

try this code ...
here h is row number

int h=0;
TextBox nt = (TextBox)Gridview1.Rows[h].Cells[1].FindControl("txt_Product_Name");
string myVal= nt.Text ;

by using FindControl method u can pick value of any control inside a grid view.

enjoy :)

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