先看效果图，点击【添加】则新增一条数据，点击相应的删除按钮，则删除该条记录；
代码如下：
protected void Page_Load(object sender, EventArgs e)
{
CreateTable();
}
/// <summary>
/// 新增一条收据
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btn_shouju_add_Click(object sender, EventArgs e)
{
if(string.IsNullOrEmpty(txt_shouju_number.Text))
{
lb_msg_shouju.Text = "收据号码不能为空！";
return;
}
if (ViewState["shoujuCount"] == null || ViewState["shoujuCount"].ToString() == "0")
{
ViewState["shoujuCount"] = 1;
ViewState["shoujuNumbers"] = txt_shouju_number.Text;
ViewState["shoujuStates"] = ddl_shouju_state.SelectedItem.Text;
}
else
{
string shoujuNumber = ViewState["shoujuNumbers"].ToString()+"|";
if(shoujuNumber.Contains(txt_shouju_number.Text+"|"))
{
lb_msg_shouju.Text = "已经存在该收据，请重新添加！";
return;
}
ViewState["shoujuCount"] = int.Parse(ViewState["shoujuCount"].ToString()) + 1;
ViewState["shoujuNumbers"] += "|" + txt_shouju_number.Text;
ViewState["shoujuStates"] += "|" + ddl_shouju_state.SelectedItem.Text;
}
CreateTable();
}
/// <summary>
/// 创建收据列表
/// </summary>
void CreateTable()
{
int count = ViewState["shoujuCount"] == null ? 0 : Convert.ToInt32(ViewState["shoujuCount"]);
List<string> numbers = ViewState["shoujuNumbers"] != null ? strsToList(ViewState["shoujuNumbers"].ToString()) : null;
List<string> states = ViewState["shoujuStates"] != null ? strsToList(ViewState["shoujuStates"].ToString()) : null;
tb_shouju_list.Controls.Clear();
if (count > 0)
{
#region 创建表头
TableHeaderRow head_row = new TableHeaderRow();
TableHeaderCell head_cell_number = new TableHeaderCell();
TableHeaderCell head_cell_state = new TableHeaderCell();
TableHeaderCell head_cell_delete = new TableHeaderCell();
Literal head_lateral_number = new Literal();
head_lateral_number.Text = "收据号码";
Literal head_lateral_state = new Literal();
head_lateral_state.Text = "收据状态";
Literal head_lateral_delete = new Literal();
head_lateral_delete.Text = "操作";
head_cell_number.Controls.Add(head_lateral_number);
head_cell_state.Controls.Add(head_lateral_state);
head_cell_delete.Controls.Add(head_lateral_delete);
head_row.Controls.Add(head_cell_number);
head_row.Controls.Add(head_cell_state);
head_row.Controls.Add(head_cell_delete);
tb_shouju_list.Rows.Add(head_row);
#endregion
for (int i = 0; i < count; i++)
{
#region 循环遍历创建表主体
TableRow row = new TableRow();
row.ID = "tr_" + i;
TableCell cell_number = new TableCell();
TableCell cell_state = new TableCell();
TableCell cell_delete = new TableCell();
Literal literal_number = new Literal();
literal_number.Text = numbers[i];
Literal literal_state = new Literal();
literal_state.Text = states[i];
Button btn_temp = new Button();
btn_temp.Text = "删除";
btn_temp.Attributes["delID"] = i.ToString();
btn_temp.Click += new EventHandler(Delete_shoujuRow);
cell_number.Controls.Add(literal_number);
cell_state.Controls.Add(literal_state);
cell_delete.Controls.Add(btn_temp);
row.Controls.Add(cell_number);
row.Controls.Add(cell_state);
row.Controls.Add(cell_delete);
tb_shouju_list.Rows.Add(row);
#endregion
}
}
}
List<string> strsToList(string str)
{
if (!string.IsNullOrEmpty(str.Trim()))
{
string[] strs = str.Split('|');
List<string> list = new List<string>();
list.AddRange(strs);
return list;
}
return null;
}
/// <summary>
/// 删除--添加的行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void Delete_shoujuRow(object sender, EventArgs e)
{
Button btn = (Button)sender;
int id = Convert.ToInt32(btn.Attributes["delID"]);
int count = ViewState["shoujuCount"] == null ? 0 : Convert.ToInt32(ViewState["shoujuCount"]);
List<string> numbers = ViewState["shoujuNumbers"] != null ? strsToList(ViewState["shoujuNumbers"].ToString()) : null;
List<string> states = ViewState["shoujuStates"] != null ? strsToList(ViewState["shoujuStates"].ToString()) : null;
if (count > 0)
{
numbers.RemoveAt(id);
states.RemoveAt(id);
ViewState["shoujuNumbers"] = string.Join("|", numbers);
ViewState["shoujuStates"] = string.Join("|", states);
ViewState["shoujuCount"] = count - 1;
}
CreateTable();
}
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