目前我将文本文件转到桌面,在ASP中如何为用户提示文件保存对话框?结果是来自streamreader的字符串为"result",如下所示:
StreamWriter FileWriter = new StreamWriter(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "file.txt"));
FileWriter.Write(result);
FileWriter.Close();
Run Code Online (Sandbox Code Playgroud) 我正在尝试为DataColumn设置默认值.如何为以下代码设置DataColumn(column3)的默认值
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[] {
new DataColumn("Column1", typeof(String)),
new DataColumn("Column2", typeof(String)),
new DataColumn("Column3", typeof(String)),
});
string csvData = File.ReadAllText(csvPath);
foreach (string row in csvData.Split('\n'))
{
if (!string.IsNullOrEmpty(row))
{
dt.Rows.Add();
int i = 0;
foreach (string cell in row.Split(','))
{
dt.Rows[dt.Rows.Count - 1][i] = cell;
i++;
}
}
}
Run Code Online (Sandbox Code Playgroud) 我在使用gradrid页脚总计时遇到以下错误"'fitem'是'变量'但是像''方法'一样使用"
protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
{
if (e.Item is GridFooterItem)
{
GridFooterItem fitem = (e.Item as GridFooterItem);
string value1 = fitem("CALENDAR_DAYS_MTD").Text;
string value2 = fitem("WEEKENDS_MTD").Text;
string value3 = fitem("HOLIDAYS_MTD").Text;
string value4 = fitem("BUSINESS_DAYS_MTD").Text;
int footervalue1 = Convert.ToInt32(value1.Split(':')[1]);
int footervalue2 = Convert.ToInt32(value2.Split(':')[1]);
int footervalue3 = Convert.ToInt32(value3.Split(':')[1]);
int footervalue4 = Convert.ToInt32(value4.Split(':')[1]);
//to get the value only.
if (footervalue2 + footervalue3 + footervalue4 > footervalue1)
{
fitem("WEEKENDS_MTD").Style("color") = "Black";
fitem("HOLIDAYS_MTD").Style("color") = "Black";
fitem("BUSINESS_DAYS_MTD").Style("color") = "Black";
}
else
{
fitem("WEEKENDS_MTD").Style("color") = "Red"; …Run Code Online (Sandbox Code Playgroud)