C# 如何在C中循环sql查询

我想执行10次查询以获得随机值， 但我的代码从未停止过， 它不断循环，没有响应

这是我的密码

int j = 0;
do {
    DataSet AVATARLINE = new DataSet();
    SqlDataAdapter AVATARLINE_1 = new SqlDataAdapter("DECLARE
            @Random INT,@Upper INT,
            @Lower INT SET @Lower = (select MIN(ID)from MastryID)SET
            @Upper = (select MAX(ID)from MastryID)+1 SELECT
            @Random = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)SELECT @Random", connection);
    AVATARLINE_1.Fill(AVATARLINE);
    foreach (DataRow row in AVATARLINE.Tables[0].Rows)
    {
        for (int i = 0; i < AVATARLINE.Tables[0].Columns.Count; i++)
        richTextBox1.Text += row[i].ToString() + Environment.NewLine;
    }
}
while (j < 10); // 0-9

你知道如何让它只工作10次吗。

Add++:

最后，您可能想阅读有关Random类的内容：

给您：。。。 在循环中，您似乎没有增加j

int j = 0;
    do {
            DataSet AVATARLINE = new DataSet();
            SqlDataAdapter AVATARLINE_1 = new SqlDataAdapter("DECLARE @Random INT,@Upper INT,@Lower INT SET @Lower = (select MIN(ID)from MastryID)SET @Upper = (select MAX(ID)from MastryID)+1 SELECT @Random = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)SELECT @Random", connection);
            AVATARLINE_1.Fill(AVATARLINE);
            foreach (DataRow row in AVATARLINE.Tables[0].Rows)
            {
                for (int i = 0; i < AVATARLINE.Tables[0].Columns.Count; i++)
                    richTextBox1.Text += row[i].ToString() + Environment.NewLine;
            } 
        j++; 
        }
    while (j < 10); // 0-9

---

这里什么不起作用？你真的需要使用查询吗？为什么不使用c中的普通随机数呢？在循环中使用SQL作为随机值似乎并没有增加j，这闻起来像是一个巨大的过度杀戮，不要进一步进行向下投票。现在问题已经清楚了，代码展示了所描述的问题@拉伯纳瓦兹，请回答

for (int j = 0; j < 10; j++)
{
    DataSet AVATARLINE = new DataSet();
    SqlDataAdapter AVATARLINE_1 = new SqlDataAdapter("DECLARE @Random INT,@Upper INT,@Lower INT SET @Lower = (select MIN(ID)from MastryID)SET @Upper = (select MAX(ID)from MastryID)+1 SELECT @Random = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)SELECT @Random", connection);
    AVATARLINE_1.Fill(AVATARLINE);
    foreach (DataRow row in AVATARLINE.Tables[0].Rows)
    {
        for (int i = 0; i < AVATARLINE.Tables[0].Columns.Count; i++)
            richTextBox1.Text += row[i].ToString() + Environment.NewLine;
    }  
}

int j = 0;
    do {
            DataSet AVATARLINE = new DataSet();
            SqlDataAdapter AVATARLINE_1 = new SqlDataAdapter("DECLARE @Random INT,@Upper INT,@Lower INT SET @Lower = (select MIN(ID)from MastryID)SET @Upper = (select MAX(ID)from MastryID)+1 SELECT @Random = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)SELECT @Random", connection);
            AVATARLINE_1.Fill(AVATARLINE);
            foreach (DataRow row in AVATARLINE.Tables[0].Rows)
            {
                for (int i = 0; i < AVATARLINE.Tables[0].Columns.Count; i++)
                    richTextBox1.Text += row[i].ToString() + Environment.NewLine;
            } 
        j++; 
        }
    while (j < 10); // 0-9