Question

错误显示为“@Cmp_DocPath附近的语法不正确”，如果我使用注释行代码我得到错误为“此sqlparametercollection不包含带参数名称的'sql参数'@Cmp_DocPath'。”如何获取文件名AsyncFileUpload AJAX控件？

    protected void BtnCmpApproval_Click(object sender, EventArgs e)
    {
      SqlConnection SqlCon = new SqlConnection(GetConnectionString());
        string query = "INSERT INTO User_Info2 VALUES     (@lblCmpUserName,@txtCmpName,
      @txtRegCountry,@txtCmpRegNo,@txtCmpEstdate,@txtCmpAddress,@ddlAddrIn)";
        try
        {
            SqlCon.Open();
            SqlCommand cmd = new SqlCommand(query, SqlCon);
            cmd.CommandType = CommandType.Text;
            cmd.Parameters.AddWithValue("@UserName", lblCmpUserName.Text);
            cmd.Parameters.AddWithValue("@Cmp_Name", txtCmpName.Text);
            cmd.Parameters.AddWithValue("@Commercial_RegNo", txtRegCountry.Text);
            cmd.Parameters.AddWithValue("@Comm_Country", txtCmpRegNo.Text);
            cmd.Parameters.AddWithValue("@Cmp_EstablishDate", txtCmpEstdate.Text);
            //cmd.Parameters.AddWithValue("@Cmp_DocPath", AFU1.FileName);
            cmd.Parameters["@Cmp_DocPath"].Value=AFU1.FileName;
            cmd.Parameters.AddWithValue("@txtCmpAddress", txtCmpAddress.Text);
            cmd.Parameters.AddWithValue("@ddlAddrIn", ddlAddrIn.SelectedItem.Text);
            cmd.ExecuteNonQuery();
        }
        catch (Exception ex)
        {
           throw new Exception(ex.Message);
        }
        finally
        { 
           SqlCon.Close();
        }
    }

Answer 1

您已在Sql Insert String中设置了这些参数（7个参数）

@lblCmpUserName,
@txtCmpName,       
@txtRegCountry,
@txtCmpRegNo,
@txtCmpEstdate,
@txtCmpAddress,
@ddlAddrIn

您已在SqlCommand（8个参数）中添加了这些参数

@UserName   -> Missing
@Cmp_Name   -> Missing
@Commercial_RegNo ->Missing
@Comm_Country  -> Missing
@Cmp_EstablishDate ->Missing
@Cmp_DocPath  ->Missing
@txtCmpAddress  ->Found it  !!
@ddlAddrIn  ->Found it!!!!

正如你所看到的，你错过了不止一个。我想你混淆了参数名称的控件名称。您应该将插入字符串中的名称更改为添加到参数集合中的相同名称。

string query = "INSERT INTO User_Info2 VALUES (@UserName,@Cmp_pName, " + 
               "@Comm_Country, @Commercial_RegNo,@Cmp_EstablishDate," + 
               "@txtCmpAddress,@ddlAddrIn);

此外，您添加参数 Cmp_DocPath“，但我无法在您的插入字符串中的任何位置找到它。

Answer 2

您没有添加名称为@Cmp_DocPath的参数，您的代码只是假设它已经存在，而且它告诉您它不是。您应该以添加其他参数的方式添加参数，例如：

cmd.Parameters.AddWithValue("@Cmp_DocPath", AFU1.FileName);

Answer 3

添加参数值时，查询参数名称和参数名称之间应该匹配。检查所有参数名称，类型和参数计数，与查询中提供的参数相同。

示例代码：

try
{
    string query = "INSERT INTO User_Info2 VALUES (@UserName,@Cmp_Name,@Commercial_RegNo,@Comm_Country,@Cmp_EstablishDate,@Cmp_DocPath, @txtCmpAddress,@ddlAddrIn)";
    using (SqlConnection SqlCon = new SqlConnection(GetConnectionString()))
    {
        SqlCon.Open();
        using (SqlCommand cmd = new SqlCommand(query, SqlCon))
        {
            cmd.CommandType = CommandType.Text;
            cmd.Parameters.AddWithValue("@UserName", lblCmpUserName.Text);
            cmd.Parameters.AddWithValue("@Cmp_Name", txtCmpName.Text);
            cmd.Parameters.AddWithValue("@Commercial_RegNo", txtRegCountry.Text);
            cmd.Parameters.AddWithValue("@Comm_Country", txtCmpRegNo.Text);
            cmd.Parameters.AddWithValue("@Cmp_EstablishDate", txtCmpEstdate.Text);
            cmd.Parameters.AddWithValue("@Cmp_DocPath", AFU1.FileName);
            cmd.Parameters.AddWithValue("@txtCmpAddress", txtCmpAddress.Text);
            cmd.Parameters.AddWithValue("@ddlAddrIn", ddlAddrIn.SelectedItem.Text);
            cmd.ExecuteNonQuery();
        }

    }

}
catch (Exception ex)
{
    throw new Exception(ex.Message);
}

传递参数时语法不正确

3 个答案: