我有一个div,我试图在代码中添加一个CSS类,但我尝试时收到以下错误
Property or indexer 'System.Web.UI.HtmlControls.HtmlControl.Style' cannot be assigned to -- it is read only
我使用以下代码:
protected void BTNEvent_Click(object sender, ImageClickEventArgs e)
{
BtnventCss.Style= "hom_but_a";
}
谁能帮帮我吗？
将数据网格视图中的数据导出到Excel工作表时出现错误:
错误(旧格式或无效的类型库.(HRESULT异常:0x80028018(TYPE_E_INVDATAREAD)))
在这条线上:
Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
我该如何解决这个问题？
我的完整代码:
private void button1_Click(object sender, EventArgs e)
{
System.Globalization.CultureInfo oldCI = System.Threading.Thread.CurrentThread.CurrentCulture;
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
// Creating Excel Application
Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
System.Threading.Thread.CurrentThread.CurrentCulture = oldCI;
// Creating new WorkBook within Excel application
Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
// Creating new Excel sheet in workbook
Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
// See the Excel sheet behind the program
//Funny
app.Visible = true;
// Get the reference of first sheet. By default its …我有一个Windows窗体中的组合框,它从数据库中检索数据.我做得很好,但我想在数据库中添加第一项<-Please select Category->.我怎样才能做到这一点？我在哪里可以买到它？
public Category()
{
InitializeComponent();
CategoryParent();
}
private void CategoryParent()
{
using (SqlConnection Con = GetConnection())
{
SqlDataAdapter da = new SqlDataAdapter("Select Category.Category, Category.Id from Category", Con);
DataTable dt = new DataTable();
da.Fill(dt);
CBParent.DataSource = dt;
CBParent.DisplayMember = "Category";
CBParent.ValueMember = "Id";
}
}
我想截断表,但列值等于NULL
truncate table FB_Player where FB_Player.Status ='NULL'
我有解决方案在我的公司网站上显示视频,我的经理告诉我将网站上的所有视频添加为列表并将其列入(最近的视频,大多数视图)请求我希望任何人帮助我如何做到这一点？
请注意此链接 http://www.yallakora.com/arabic/YKChampions/EmbedListing.aspx?region=
我有Gridview绑定sqldatasource,我有登录看到gridview,我为这些登录创建了角色,他们无法看到所有gridview列,所以我怎么能让一些列只读.
code public void CheckLoginAuthorty(){
using (SqlConnection Con = Connection.GetConnection())
{
SqlCommand com = new SqlCommand("CheackLoginInRole", Con);
com.CommandType = CommandType.StoredProcedure;
com.Parameters.Add(Parameter.NewNVarChar("@Login", Session.Contents["Username"].ToString()));
object O = com.ExecuteScalar();
if (O != null)
{
string S = O.ToString();
if (IsInRole("AR-Translator", O.ToString()))
{
///////// Grideview code/////////////////
}
else if (IsInRole("EN-Translator", O.ToString()))
{
/////////Grideview code/////////////////
}
}
}
}
我有一个数据网格视图,我已导出到Excel工作表.代码运行良好,但当出现另存为对话框并保存文件时,我找不到文件,也没有出现错误.
private void button1_Click(object sender, EventArgs e)
{
try
{
using (new ExcelUILanguageHelper())
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Execl files (*.xls)|*.xls";
saveFileDialog.FilterIndex = 0;
saveFileDialog.RestoreDirectory = true;
saveFileDialog.CreatePrompt = true;
saveFileDialog.Title = "Export Excel File To";
Excel.ApplicationClass ExcelApp = new Excel.ApplicationClass();
ExcelApp.Application.Workbooks.Add(Type.Missing);
ExcelApp.Columns.ColumnWidth = 30;
for (int i = 0; i < DGData.Rows.Count; i++)
{
DataGridViewRow row = DGData.Rows[i];
for (int j = 0; j < row.Cells.Count; j++)
{
ExcelApp.Cells[i + 1, j + …我有代码在gridview中找到标签,我检查了它,s标签文本,它给了我索引而不是文本和这个错误apear对象参考不设置为.....所以我想给CU.Username = LBL.文本; 文本没有控制代码索引
protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e)
{
LblRseult.Visible = true;
LblRseult.Text = "Successfully Process";
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
cUser CU = new cUser(this);
LBL = (Label)GridView1.Rows[e.RowIndex].Cells[1].FindControl("Label1");
CU.Username = LBL.Text;
if (CU.BasiclyExists())
{
LblRseult.Visible = true;
LblRseult.Text = "This user already exists";
}
}
我有一个按钮,可以将用户重定向到另一个页面.相反,我希望这个按钮打开一个指向这个位置的新窗口.有人可以帮我这样做吗？
ASPX:
<asp:ImageButton ID="img_url"
CommandName='<%#Eval("url") %>'
OnClick="img_url_Click"
runat="server"
ImageUrl="~/images/products_details.png"
/>
CS:
protected void img_url_Click(object sender, ImageClickEventArgs e)
{
ImageButton img = sender as ImageButton;
Response.Redirect(img.CommandName.ToString());
}
我有注册表单,我在这个表单的用户名文本框中,当我测试网页表单时,我在文本框用户名(Kaz'em)中添加了这个用户,我有这个错误
('em'附近的语法不正确.字符串''后面的未闭合引号.)
public bool RegisteredUser()
{
bool Return = false;
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ElarabyGroup"].ConnectionString);
SqlCommand cmd = new SqlCommand("Select Count(UserName) From [Registeration] Where [Registeration].UserName = '" + RegisteredUserName + "'", con);
con.Open();
if (int.Parse(cmd.ExecuteScalar().ToString()) > 0)
Return = true;
con.Close();
return Return;
}
我有错误"无法将字符串[]转换为字符串"
string[] digitsArray = {dd, pp, ff, cc};
由于digitsArray数组的数组和所有"dd,pp,ff,cc"数组都有字符串值