如何检索GridView的TextBox值 [英] How do I retrieve TextBox value of a GridView

问题描述

代码仅在普通WebForm中

The code is just in a Normal WebForm

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Subject" HeaderText="Subject" />
<asp:TemplateField HeaderText="Marks">
<ItemTemplate>
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>

</Columns>
    </asp:GridView>

这段代码在继承的aspx.cs页面中

This code is in inherited aspx.cs page

protected void Page_Load(object sender, EventArgs e)
    {
        GridView1.DataSource = setSubject();
        GridView1.DataBind();
    }

private DataTable setSubject()
    {
        DataTable dt = new DataTable();
        dt.Clear();
        dt.Columns.Add("Subject");

        DataRow dr = dt.NewRow();
        dr["Subject"] = "English";
        dt.Rows.Add(dr);

        dr = dt.NewRow();
        dr["Subject"] = "Physics";
        dt.Rows.Add(dr);

        dr = dt.NewRow();
        dr["Subject"] = "Chemistry";
        dt.Rows.Add(dr);

        dr = dt.NewRow();
        dr["Subject"] = "Mathematics";
        dt.Rows.Add(dr);
        return dt;
    }


protected void Button1_Click(object sender, EventArgs e)
    {
Double result;
 foreach (GridViewRow grdrow in grd.Rows)
        {
            if (grdrow.RowType == DataControlRowType.DataRow)
            {
                TextBox textBoxValue = (TextBox)grdrow.FindControl("TextBox1");
                result = result + Convert.ToDouble(textBoxValue.Text);
            }
        }
}

我无法使用此方法检索文本框的经过编辑的值.

但是代码对其他网站(项目)有效.

I can not retrieve the value of after edited value of textbox using this.

But the code is effective for a different website(project).

推荐答案

首先，您使用的是grdrow而不是GridView1.
除此之外，您可以尝试
(TextBox)GridView1.Rows [0] .FindControl("TextBox1");

并且您想要从网格中选择行，然后尝试此

(TextBox)GridView1.SelectedRow.Cells [0] .FindControl("TextBox1");

希望对您有所帮助.

firstly you are using grdrow instead of GridView1.
apart from this you can try
(TextBox)GridView1.Rows[0].FindControl("TextBox1");

and you want to select row from the grid then try this

(TextBox)GridView1.SelectedRow.Cells[0].FindControl("TextBox1");

hope it''ll help.

您可以使用FindControl方法.

试试类似的东西:

You can use FindControl method.

Try something like:

// For every row
foreach (GridViewRow item in myGrid.Rows)
{   
    TextBox myTextBox = (TextBox)item.FindControl("myTextBox");
    string text = myTextBox.Text;       
} 

在绑定数据时尝试添加IsPostBack.

try adding IsPostBack when you bind data.

private void Page_Load()
{
    if (!IsPostBack)
    {
        GridView1.DataSource = setSubject();
        GridView1.DataBind();
    }
}

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