Question

我试图将数据插入到SQL Server CE本地数据库中，但是遇到了我无法解决的问题。

foreach (var player in cells)
{
    var sql = new SqlCeConnection(
        @"Data Source=H:\Repositories\NHL-Connected\NHLConnected\NHLScraper\app.sdf");

    try
    {
        sql.Open();
        var cmd =
            new SqlCeCommand("INSERT INTO Players (PlayerID, PlayerName, Team_Abbreviation) Values ( '" +
                player.ID.Replace("/ice/player.htm?id=", null) + "," + player.Name + "," +
                player.Team + "')", sql);

        int affectedRows = cmd.ExecuteNonQuery();

        if (affectedRows > 0) Console.WriteLine("Successful.");
        else Console.WriteLine("Failed.");
    }
    catch (SqlCeException ex)
    {
        Console.WriteLine(ex.Message);
    }
}

我得到的例外/错误是

列名和源表达式的计数与[Column]不匹配 name count = 3，Source expression count = 1]

我不确定我是否正确地这样做了。

请告知。

Answer 1

你只是放错地方并忘记了一些单引号，这会导致单个字符串值。也许你应该重新思考如何构造你的sql代码并改用参数：

尝试这样的事情：

var cmd = new SqlCeCommand(
    "INSERT INTO Players (PlayerID, PlayerName, Team_Abbreviation) VALUES (@ID, @Name, @Team);", sql);
cmd.Parameters.AddWithValue("@ID", player.ID.Replace("/ice/player.htm?id=", null));
cmd.Parameters.AddWithValue("@Name", player.Name);
cmd.Parameters.AddWithValue("@Team", player.Team);

Answer 2

你在一个“''”中做所有事情＆lt; - 它认为它是一个列

try
{
var cmd = new SqlCeCommand("INSERT INTO Players (PlayerID, PlayerName,  Team_Abbreviation) Values (@PlayerID,@PlayerName,@Team_Abbreviation)", sql);

cmd.Parameters.AddWithValue("@PlayerID", PlayerIDTxt);
cmd.Parameters.AddWithValue("@PlayerName", PlayerNameTxt);
cmd.Parameters.AddWithValue("@Team_Abbreviation", Team_AbbreviationTxt);

cmd.Open();
int affectedRows = cmd.ExecuteNonQuery();
cmd.Close();

}

catch
{
}

Answer 3

尝试在变量中添加“`”，因此它们是3个不同的变量

player.ID.Replace("/ice/player.htm?id=", null) + "," + player.Name + "," +
            player.Team + "')", sql);

在你上面的代码中，你有1个开始，一个结束，每个变量需要一个

C＃SQL Server Compact Insert解决方案

3 个答案: