我正在尝试从数据库中获取数据到文本!我粘贴的代码工作正常,它并没有给我任何例外,但问题是这是它不能从数据库中获取所需的数据,它获取System.Data.SqlClient.SqlDataReader
。将SQL数据存储到文本框
请帮助我理清问题...
//// CODE ////
private void ReplaceBookmarkText(Microsoft.Office.Interop.Word.Document doc, string bookmarkName,string text)
{
object objI=1 ;
object count = 7;
object oCount = Microsoft.Office.Interop.Word.WdConstants.wdForward;
object oUnit = Microsoft.Office.Interop.Word.WdUnits.wdCharacter;
int number;
//here is your name, store it where ever you want:
bookmarkName = doc.Bookmarks.get_Item(ref objI).Name;
//bookmarkEnd = doc.Bookmarks.get_Item(ref objI).End;
//bookmarkStart = doc.Bookmarks.get_Item(ref objI).Start;
number = doc.Bookmarks.get_Item(ref objI).Range.MoveEnd(ref oUnit, ref count);
//bookmarkEnd = doc.Bookmarks.get_Item(ref objI).Start;
string bookmarkValue = doc.Bookmarks.get_Item(ref objI).Range.Text;
MessageBox.Show(bookmarkValue);
string db_name = "";
try
{
sql_con = new SqlConnection(con_str);
sql_con.Open();
//"SELECT FirstName FROM ContactPerson WHERE (Contact_ID = " + fNameTemp + ")");
// select s_name from student where s_reg = '11-ARID-4204'
// string sql_query = ("select s_name from student where (s_reg = " + txtboxrollno + ")");
//"Select * from logintable where password=" + "'TextBox1.Text'";
sql_cmd = sql_con.CreateCommand();
string qrery = ("select s_name from student where (s_reg = " + "'txtboxrollno.text'" + ")");
SqlCommand cmd = new SqlCommand(qrery,sql_con);
//sql_cmd.CommandText = ("select s_name from student where (s_reg = " + txtboxrollno.Text.Trim() + ")");
cmd.ExecuteNonQuery();
MessageBox.Show(cmd.ToString());
SqlDataReader sdr;
sdr = cmd.ExecuteReader();
//textBox1.Text = sdr.ToString();
db_name = textBox1.Text;
while(sdr.Read())
{
//textBox1.Text = sdr["s_name"].ToString();
textBox1.Text = cmd.ExecuteScalar().ToString();
//txtpatientid.Text = command.ExecuteScalar().ToString();
//fNameTextBox.Text = sdr["FirstName"].ToString();
}
}
}
我很困惑你的问题到底是什么。你能否试着用一句话来澄清这个问题到底是什么? –
**警告**:您的代码易受[SQL注入](http://en.wikipedia.org/wiki/SQL_injection)影响。请使用[SQL参数](http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlparameter.aspx)进行研究。 – Brian
问题是这不显示从数据库获得的任何数据!我想让它显示数据库中的数据! cmd.ExecuteQuery()应该返回数据而不是System.bla .... – user2509861