Question

动态生成的textbox怎么获取值? 单击button2得到textbox的值

TableRow tr;
TableCell tc;
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
tr = new TableRow();
tc = new TableCell();
tc.Controls.Add(new LiteralControl("借据号"));
tr.Cells.Add(tc);

tc = new TableCell();
tc.Controls.Add(new LiteralControl("金额（万元）"));
tr.Cells.Add(tc);

Table1.Rows.Add(tr);
}
}
protected void Button1_Click(object sender, EventArgs e)
{
int tdNum = ViewState["tdNum"] == null ? 1 : Convert.ToInt16(ViewState["tdNum"]) + 1;
ViewState["tdNum"] = tdNum;
for (int i = 1; i <= tdNum; i++)
{
tr = new TableRow();
tc = new TableCell();
//tc.Text = "新增的行" + i;

TextBox t = new TextBox();
t.ID = "t" + i.ToString();
t.Text = "add" + i.ToString();
tc.Controls.Add(t);

tr.Cells.Add(tc);

TextBox tt = new TextBox();
tt.ID = "td" + i.ToString();
tt.Text = "ad" + i.ToString();
tc.Controls.Add(tt);

tr.Cells.Add(tc);

Table1.Controls.Add(tr);
}
}
protected void Button2_Click(object sender, EventArgs e)
{
foreach (Control c in Table1.Controls)
{
if (c is TextBox)
{
Label1.Text = "success";
}
}
}

Answer 1

textbox.Text;就是获取textbox的值
在Button的Click时间里添加texbox.Text，然后赋值给某个变量把值存起来
不如：
string s;
s=texbox.Text;
s就textbox的值！

Answer 2

用jQuery或者js很容易搞定的

Answer 3

代码如下：
protected void Button2_Click(object sender, EventArgs e)
{
if (ViewState["tdNum"] == null)
{
return;
}

int num = Convert.ToInt32(ViewState["tdNum"]);

for (int i = 1; i <= num; i++)
{
if (Request.Form["t" + i] != null)
{
Label1.Text += Request.Form["t" + i].ToString();
}
}
}

Answer 4

protected void Button2_Click(object sender, EventArgs e)
{
if (ViewState["tdNum"] == null)
{
return;
}

int num = Convert.ToInt32(ViewState["tdNum"]);

for (int i = 1; i <= num; i++)
{
if (Request.Form["t" + i] != null)
{
Label1.Text += Request.Form["t" + i].ToString();
}
}
}