问从sqlite检索字符串形式的数字并转换为intEN版权声明：本文内容由互联网用户自发贡献，该文观点仅代表...
//////SQL语句///参数内容,比如一个字段是格式复杂的文章,有特殊符号,可以通过这个方式添加///<returns>影响的记录数</returns>publicstaticintExecuteSql(stringSQLString,stringcontent) {using(SQLiteConnection connection =newSQLiteConnection(connectionString)) { SQLiteCommand cmd=newSQLiteCommand(SQLString, con...
};objectobj=SQLite.ExecuteScalar(sql, parameters);inti =Convert.ToInt32(obj);if(i >0) {this.label4.Text ="登录成功!";this.label4.Show(); }else{this.label4.Text ="登录失败!";this.label4.Show(); } } (6)【注册】的逻辑 privatevoidbutton1_Click(objectsender, EventArgs e){;stringna...
1、获取当前时间戳字符串 public static String getCurrentTimeSpan() { TimeSpan ts = DateTime.Now.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc); string timeSpan = Convert.ToInt64(ts.TotalSeconds).ToString(); return timeSpan; } 1. 2. 3. 4. 5. 请注意...
try{stringsql ="insert into"+ textBox2.Text +"(name, score) values ('"+ textBox3.Text +"',"+ Convert.ToInt32(textBox4.Text) +")"; SQLiteCommand command=newSQLiteCommand(sql, Conn); command.ExecuteNonQuery(); }catch(Exception ex) ...
if (InsertData(myDb, txtFullSN.Text, Convert.ToInt32(txtMeterID.Text), txtOrderNr.Text)) { txtMessage.Text = "插入数据成功"; } else { txtMessage.Text = "插入数据失败"; } } 4. 查询数据 static List<string> ReadData(string db) ...
private static final int SQLITE_NOTADB = 26; @Override public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate() { return new SQLExceptionConversionDelegate() { @Override public JDBCException convert(SQLException sqlException, String message, String sql) { final int errorCode = JdbcException...
(x => x.ClassID).ToList()) { Items.Add(new SelectedItem { Value = item.ClassID.ToString(), Text = item.ClassName }); } if (string.IsNullOrWhiteSpace(Value.ClassName)) { Value.ClassName = Items.First().Text; Value.ClassID = Convert.ToInt32(Items.First().Value); } GenderItems =...
如果使用上面的做法,只需要指定连接字符串ConnectionString即可,一般可以这样指定其数据库连接字符串。 connectionString = string.Format(@"Data Source={0}\OrderWater.db;Version=3;", Application.StartupPath); 如果是使用微软的企业库EnterpriseLibary来进行数据库访问的话,那么需要在配置文件中配置数据库访问,如下...
info.DataTypeId = Convert.ToInt32(dr["ProviderType"].ToString());info.DataType = dr["DataTypeName"].ToString().Trim();info.AutoIncrement = (bool)dr["IsAutoIncrement"];info.IsPrimaryKey = (bool)dr["IsKey"];info.Unique = (bool)dr["IsUnique"];info.IsReadOnly = (bool)...