Question

如何根据用户在网络上的输入生成数据网格行，因此如果我在文本框中输入5，则将生成5行，反之亦然。我在下面尝试过这个代码但每次尝试运行程序时都会出现Exception of type 'System.OutOfMemoryException' was thrown错误

我的aspx.cs

private DataTable TempTable
{
    get { return (DataTable)ViewState["TempTable"]; }
    set { ViewState["TempTable"] = value; }
}

public void dtTemp()
{
    TempTable = new DataTable();
    TempTable.Columns.Add("ID_", typeof(string));
    TempTable.Columns.Add("Name_", typeof(string));
    TempTable.Columns.Add("Phone_", typeof(string));
}

protected void btnAdd_Click(object sender, ImageClickEventArgs e)
{
    int rowTotal = Int32.Parse(totalRow.Text);
    int i = 0;
    panelTest.Visible = true;

    dtTemp();
    DataRow dr = TempTable.NewRow();

    for (; ; )
    {
        if (i < rowTotal)
        {
            dr = TempTable.NewRow();
            dr["ID_"] = "";
            dr["Name_"] = "";
            dr["Phone_"] = "";
            TempTable.Rows.Add(dr);
            grid1.DataSource = TempTable;
            grid1.DataBind();
        }
        else
        {
            break;
        }
    }
}

Answer 1

你必须在下面尝试这个，在（;;）

的永久循环中增加i ++

 protected void btnAdd_Click(object sender, ImageClickEventArgs e)
 {
    int rowTotal = Int32.Parse(totalRow.Text);
    int i = 0;
    panelTest.Visible = true;

    dtTemp();
    DataRow dr = TempTable.NewRow();

    for (; ; )
    {
        if (i < rowTotal)
        {
            dr = TempTable.NewRow();
            dr["ID_"] = "";
            dr["Name_"] = "";
            dr["Phone_"] = "";
            TempTable.Rows.Add(dr);
            grid1.DataSource = TempTable;
            grid1.DataBind();
        }
        else
        {
            break;
        }

        i++;
    }
}

Answer 2

我之前的代码崩溃了我的视觉工作室，它说我没有足够的内存所以我改变了我的代码并且它有效。

public DataTable TempTable
{
    get; set;
}

public void dtTemp()
{
    TempTable = new DataTable();
    TempTable.Columns.Add("ID_", typeof(string));
    TempTable.Columns.Add("Name_", typeof(string));
    TempTable.Columns.Add("Phone_", typeof(string));
}

protected void btnAdd_Click(object sender, ImageClickEventArgs e)
{
    int rowTotal = Int32.Parse(txtRow.Text);

    dtTemp();
    DataRow dr = TempTable.NewRow();

    for (int i = 0; i < rowTotal; i++)
    {
        dr = TempTable.NewRow();
        dr["ID_"] = "";
        dr["Name_"] = "";
        dr["Phone_"] = "";
        TempTable.Rows.Add(dr);
    }

    grid1.DataSource = TempTable;
    grid1.DataBind();
}

根据文本框输入生成datagrid行

2 个答案: