C＃数据库插入（ASP.NET） - 的ExecuteNonQuery：CommandText属性尚未初始化

问题描述

我第一次做从ASP.NET/C#插入，我有一个小问题。每次我不断收到以下错误此code运行的ExecuteNonQuery：CommandText属性尚未初始化？有谁知道这是什么意思，我该如何解决这个问题。

在此先感谢！

 字符串的SQLQuery =INSERT INTO ATI_LOG_IO（日期，CONNECT_TIME，Disconnect_Time，ATI_Rep，Reason_For_Access，Property_Contact，CASE_NUMBER，评论，PROPERTY_ID）;
的SQLQuery + =VALUES（@Today，@Connect，@Disconnect，@Rep，@Reason，@contact，@CaseNum，@Comments，@PropertyID）;
使用（SqlConnection的dataConnection =新的SqlConnection（的connectionString））
{
    使用（的SqlCommand dataCommand = dataConnection.CreateCommand（））
    {
        dataConnection.Open（）;
        dataCommand.CommandType = CommandType.Text;
        dataCommand.CommandText =的SQLQuery;
        dataCommand.Parameters.Add（@今日，DateTime.Today.ToString（））;
        dataCommand.Parameters.Add（@连接，txtInDate.Text ++ fromHrs.Text +：+ fromMins.Text +：00）;
        dataCommand.Parameters.Add（@断开，txtOutdate.Text ++ toHrs.Text +：+ fromMins.Text +：00）;
        dataCommand.Parameters.Add（@ REP，REPID）;
        dataCommand.Parameters.Add（@理，txtReason.Text）;
        dataCommand.Parameters.Add（@联系人，txtContact.Text）;
        dataCommand.Parameters.Add（@ CaseNum，txtCaseNum.Text）;
        dataCommand.Parameters.Add（@评论，txtComments.Text）;
        dataCommand.Parameters.Add（@物业ID，lstProperties.SelectedValue）;
        dataCommand.ExecuteNonQuery（）;
        dataConnection.Close（）;
    }
}
 

解决方案

 字符串的SQLQuery =INSERT INTO ATI_LOG_IO（日期，CONNECT_TIME，Disconnect_Time，ATI_Rep，Reason_For_Access，Property_Contact，CASE_NUMBER，评论， PROPERTY_ID）;
的SQLQuery + =VALUES（@Today，@Connect，@Disconnect，@Rep，@Reason，@contact，@CaseNum，@Comments，@PropertyID）;
使用（SqlConnection的dataConnection =新的SqlConnection（的connectionString））
{
    使用（的SqlCommand dataCommand =新的SqlCommand（sqlquery的，dataConnection））
    {
        dataCommand.Parameters.AddWithValue（今日，DateTime.Today.ToString（））;
        dataCommand.Parameters.AddWithValue（连接，txtInDate.Text ++ fromHrs.Text +：+ fromMins.Text +：00）;
        dataCommand.Parameters.AddWithValue（断开，txtOutdate.Text ++ toHrs.Text +：+ fromMins.Text +：00）;
        dataCommand.Parameters.AddWithValue（REP，REPID）;
        dataCommand.Parameters.AddWithValue（理，txtReason.Text）;
        dataCommand.Parameters.AddWithValue（联系方式，txtContact.Text）;
        dataCommand.Parameters.AddWithValue（CaseNum，txtCaseNum.Text）;
        dataCommand.Parameters.AddWithValue（注释，txtComments.Text）;
        dataCommand.Parameters.AddWithValue（物业ID，lstProperties.SelectedValue）;        dataConnection.Open（）;
        dataCommand.ExecuteNonQuery（）;
        dataConnection.Close（）;
    }
}
 

复制粘贴应该做的伎俩

first time I'm doing an insert from ASP.NET/C# and I'm having a little issue. I keep getting the following error every time this code runs: " ExecuteNonQuery: CommandText property has not been initialized" Does anyone know what this means and how I fix it?

Thanks in advance!

string sqlQuery = "INSERT INTO ATI_LOG_IO (Date, Connect_Time, Disconnect_Time, ATI_Rep, Reason_For_Access, Property_Contact, Case_Number, Comments, Property_ID)";
sqlQuery += "VALUES (@Today, @Connect, @Disconnect, @Rep, @Reason, @Contact, @CaseNum, @Comments, @PropertyID)";
using (SqlConnection dataConnection = new SqlConnection(connectionString))
{
    using (SqlCommand dataCommand = dataConnection.CreateCommand())
    {
        dataConnection.Open();
        dataCommand.CommandType = CommandType.Text;
        dataCommand.CommandText = sqlQuery;
        dataCommand.Parameters.Add("@Today", DateTime.Today.ToString());
        dataCommand.Parameters.Add("@Connect", txtInDate.Text + " " + fromHrs.Text + ":" + fromMins.Text + ":00");
        dataCommand.Parameters.Add("@Disconnect", txtOutdate.Text + " " + toHrs.Text + ":" + fromMins.Text + ":00");
        dataCommand.Parameters.Add("@Rep", repID);
        dataCommand.Parameters.Add("@Reason", txtReason.Text);
        dataCommand.Parameters.Add("@Contact", txtContact.Text);
        dataCommand.Parameters.Add("@CaseNum", txtCaseNum.Text);
        dataCommand.Parameters.Add("@Comments", txtComments.Text);
        dataCommand.Parameters.Add("@PropertyID", lstProperties.SelectedValue);
        dataCommand.ExecuteNonQuery();
        dataConnection.Close();
    }
}

解决方案

string sqlQuery = "INSERT INTO ATI_LOG_IO (Date, Connect_Time, Disconnect_Time, ATI_Rep, Reason_For_Access, Property_Contact, Case_Number, Comments, Property_ID)";
sqlQuery += " VALUES (@Today, @Connect, @Disconnect, @Rep, @Reason, @Contact, @CaseNum, @Comments, @PropertyID)";
using (SqlConnection dataConnection = new SqlConnection(connectionString))
{
    using (SqlCommand dataCommand = new SqlCommand(sqlQuery, dataConnection))
    {
        dataCommand.Parameters.AddWithValue("Today", DateTime.Today.ToString());
        dataCommand.Parameters.AddWithValue("Connect", txtInDate.Text + " " + fromHrs.Text + ":" + fromMins.Text + ":00");
        dataCommand.Parameters.AddWithValue("Disconnect", txtOutdate.Text + " " + toHrs.Text + ":" + fromMins.Text + ":00");
        dataCommand.Parameters.AddWithValue("Rep", repID);
        dataCommand.Parameters.AddWithValue("Reason", txtReason.Text);
        dataCommand.Parameters.AddWithValue("Contact", txtContact.Text);
        dataCommand.Parameters.AddWithValue("CaseNum", txtCaseNum.Text);
        dataCommand.Parameters.AddWithValue("Comments", txtComments.Text);
        dataCommand.Parameters.AddWithValue("PropertyID", lstProperties.SelectedValue);

        dataConnection.Open();
        dataCommand.ExecuteNonQuery();
        dataConnection.Close();
    }
}

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