practice.dataset不包含Tables [0]的定义，并且没有接受类型为practice.dataset的第一个参数的扩展方法，如果你缺少用户指令或者...... [英] practice.dataset does not contain a definition for Tables[0] and no extension method accepting a first argument of type practice.dataset could be found are you missing a user directive or...

问题描述

string CS = ConfigurationManager.ConnectionStrings["SampleConnectionString"].ConnectionString;
        SqlDataAdapter da; Dataset ds; DataRow Rec; SqlCommandBuilder bldr;
        protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                Rec = ds.Tables[0].NewRow();//here when i writing the ds.Tables[] here iam getting the red curling lines with above mentioned error.
                Rec[0] = TextBox1.Text;
                Rec[1] = TextBox2.Text;
                Rec[2] = TextBox3.Text;
                Rec[3] = TextBox4.Text;
                Rec[4] = TextBox5.Text;
                ds.Tables[0].Rows.Add(Rec);
                Console.WriteLine("Record Inserted");               
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }

推荐答案

该代码看起来不完整，请参阅 http://msdn.microsoft.com/en-us/library/system.data.dataset.aspx [<一个href =http://msdn.microsoft.com/en-us/library/system.data.dataset.aspxtarget =_ blanktitle =New Window> ^ ]有关使用a的详细信息 DataSet 正确。

That code does not look to be complete,, see http://msdn.microsoft.com/en-us/library/system.data.dataset.aspx[^] for details on using a DataSet correctly.

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