我有一个父网格，它调用两个子网格。但出于某种未知的原因，他们被解雇了两次。我似乎无法真正弄清楚这段代码的问题。任何人都可以指导我吗？
后端代码（C#）：
protected void grdGrpPrntRpt_RowDataBound(object sender,
GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox litGrp = (TextBox)e.Row.FindControl("litGrp");
litGrp.Text =
DataBinder.Eval(e.Row.DataItem, "GroupName").ToString();
ViewState["GroupName"] = litGrp.Text;
DataSet ds = (DataSet)ViewState["ds"];
DataView dv = ds.Tables[3].DefaultView;
dv.RowFilter = "GroupName='" + litGrp.Text + "'";
DataTable dt = dv.ToTable();
GridView gvinner = (GridView)e.Row.FindControl("grdInnerMain");
gvinner.DataSource = dt;
gvinner.DataBind();
}
}
catch (Exception Ex)
{
//report error
}
}
protected void grdInnerMain_RowDataBound(object sender,
GridViewRowEventArgs e)
{
try
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox litUsr …我已经定义了以下函数,它将从表中返回3列.
public DataSet GetFunc()
{
int iRet = 0;
DataSet ds = new DataSet();
SqlConnection sqlConnection = new SqlConnection();
try
{
iRet = connect(ref sqlConnection);
if (DB_SUCCESS_CONNECT == iRet)
{
SqlCommand sqlCommand = new SqlCommand("", sqlConnection);
String strQuery = "Select ID, Did, FirstName from Users";
sqlCommand.CommandText = strQuery;
SqlDataAdapter adaptor = new SqlDataAdapter(sqlCommand);
adaptor.Fill(ds);
sqlConnection.Close();
return ds;
}
}
catch (Exception e)
{
disconnect(ref sqlConnection);
}
}
但是当我尝试构建它时,我收到错误:
错误172'GetFunc()':并非所有代码路径都返回一个值
我很困惑我哪里出错了.有人可以指导我吗？
这是我从文本字段插入数据库的代码.
SqlConnection Connection = new SqlConnection("Data Source=ESHA\\SQLEXPRESS;Initial Catalog=Gen_Lic;User ID=sa;Password=sa@");
SqlCommand Command = Connection.CreateCommand();
try
{
// Open Connection
Connection.Open();
////Console.WriteLine("Connection Opened");
// Create INSERT statement with named parameters
Command.CommandText = "INSERT INTO Gen_Lic(Lic_No, UserID, Org, UserName, SolType, Version, Lic_Type, Meap_Supp, Lic_From, Lic_To, Supp_From, Supp_To, Max_User, Max_Mach, Mach_IP, Mach_MAC) VALUES (@Lic_No, @UserID, @Org, @UserName, @SolType, @Version, @Lic_Type, @Meap_Supp, @Lic_From, @Lic_To, @Supp_From, @Supp_To, @Max_User, @Max_Mach, @Mach_IP, @Mach_MAC)";
// Add Parameters to Command Parameters collection
Command.Parameters.AddWithValue("@Lic_No", txtLNo.Text);
Command.Parameters.AddWithValue("@UserID", txtUID.Text);
Command.Parameters.AddWithValue("@Org", txtOrg.Text);
Command.Parameters.AddWithValue("@UserName", txtUName.Text); …我有一个SQL Server 2005中的表,其中包含以下列:
Fname (char (50)),
MailFrom (char (50)),
MailTo (char (50)),
Subject (char (50)),
MBody (char (100)),
MailID (int)
在表中输入行之后,我想将它们提取并存储在具有每列文本字段的文本文件/文档文件/窗口表单中.
任何建议,以获得从数据库中提取数据并将其保存在文件中的最佳方法.