3

我有一个datagridview，表中有一些数据。datagridview 允许用户输入新的数据行

这里的问题：

我想知道如何在不添加将被复制的现有数据的情况下将新插入的数据行（无论添加了多少行）放入数据库。

任何人？

编辑：我使用 sql 数据库，这是我的 datagridview。

在此处输入图像描述

显示的数据已经在数据库中，现在，如果用户在 datagridview 中插入新的多行数据怎么办？我应该输入什么代码？

我的代码如下：

private void button1_Click(object sender, EventArgs e)
        {
            con = new System.Data.SqlClient.SqlConnection();
            con.ConnectionString = "Data Source=tcp:SHEN-PC,49172\\SQLEXPRESS;Initial Catalog=LSEStock;Integrated Security=True";
            con.Open();
            SqlDataAdapter da = new SqlDataAdapter();

            for (int i = 0; i<dataGridView1.Rows.Count; i++ )
            {

                String insertData = "INSERT INTO CostList(SupplierName, CostPrice, PartsID) VALUES (@SupplierName, @CostPrice, @PartsID)" ;
                SqlCommand cmd = new SqlCommand(insertData, con);
                cmd.Parameters.AddWithValue("@SupplierName", dataGridView1.Rows[i].Cells[0].Value);
                cmd.Parameters.AddWithValue("@CostPrice", dataGridView1.Rows[i].Cells[1].Value);
                cmd.Parameters.AddWithValue("@PartsID", textBox1.Text);
                da.InsertCommand = cmd;
                cmd.ExecuteNonQuery();
            }

            con.Close();
4

4 回答 4

1

这是我的插入、取消和删除语句：

    protected void gv_RowCommand(object sender, GridViewCommandEventArgs e)
        {

            if (e.CommandName == "Insert") //- this is needed to explain that the INSERT command will only work when INSERT is clicked
            {
                gv.DataBind();

                DataTable d = dbcon.GetDataTable("SELECT * FROM CIS.CIS_TRANS ORDER BY ID DESC", "ProjectCISConnectionString");

                string transCode = "", fundCode = "", BSA_CD = "", DP_TYPE = "";

                if (d.Rows.Count > 0)
                {
                    transCode = d.Rows[0]["TRANS_CD"].ToString();
                    fundCode = d.Rows[0]["FUND_CD"].ToString();
                    BSA_CD = d.Rows[0]["BSA_CD"].ToString();
                    DP_TYPE = d.Rows[0]["DP_TYPE"].ToString();

                    if (transCode.Trim().Length > 0)
                    {
                        dbcon.Execute("INSERT INTO CIS.CIS_TRANS (ID,TRANS_CD) VALUES(CIS.S_CIS_TRANS.nextval,'')", "ProjectCISConnectionString");

                        gv.DataBind();
                    }
                }
gv.EditIndex = gv.Rows.Count - 1;

        }
        else if (e.CommandName == "Cancel")
        {
            DataTable d = dbcon.GetDataTable("SELECT * FROM CIS.CIS_TRANS ORDER BY ID DESC", "ProjectCISConnectionString");

            string transCode = "";

            if (d.Rows.Count > 0)
            {
                transCode = d.Rows[0]["TRANS_CD"].ToString();

                if (transCode.Trim().Length == 0)
                {
                    dbcon.Execute(string.Format("DELETE CIS.CIS_TRANS WHERE ID = '{0}'", d.Rows[0]["ID"]), "ProjectCISConnectionString");

                    gv.DataBind();
                }
            }
于 2012-08-08T04:30:57.193 回答
1

是否声明了 sqlcommandbuilder、dataAdapter 和 dataTable？

例如：

SQLConnection con = (your connection);
SQLDataAdapter = sda;
SQLCommandBuilder = scb;
DataTable = dt;
private void btnEnter_Click(object sender, EventArgs e)


da = new SqlDataAdapter("SELECT * FROM [table] WHERE [columnA]='" + txtData.Text + "' OR [columnB]='" + txtData.Text + "' OR [ColumnC]='" + txtData.Text + "' OR [ColumnD]='" + txtData.Text + "'", con);
            ds = new DataSet();
            dt = new DataTable();
            ds.Clear();
            da.Fill(dt);
            dg.DataSource = dt;

            con.Open();
            con.Close();

private void btnUpdate_Click(object sender, EventArgs e)
    {
        //when button is clicked, the SQL Database gets updated with the data that is plugged into the datagridview.
        scb = new SqlCommandBuilder(da);
        da.Update(dt);

    }
于 2015-10-29T14:46:50.650 回答
0

你有什么样的数据库？这是我的 oracle 数据库的源代码。如果它是一个 SQL 数据库，请将 : 替换为 @。

源代码：

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ProjectCISConnectionString %>" ProviderName="<%$ConnectionStrings:ProjectCISConnectionString.ProviderName %>"
            SelectCommand="SELECT * FROM CIS.CIS_TRANS ORDER BY ID ASC" 
            DeleteCommand="DELETE FROM CIS.CIS_TRANS WHERE ID = :ID"
            InsertCommand="INSERT INTO CIS.CIS_TRANS (TRANS_CD,FUND_CD,BSA_CD,DP_TYPE,TRANS_CD_DESC) VALUES (:TRANS_CD,:FUND_CD,:BSA_CD,:DP_TYPE,:TRANS_CD_DESC)"
            UpdateCommand="UPDATE CIS.CIS_TRANS SET TRANS_CD = :TRANS_CD, FUND_CD = :FUND_CD, BSA_CD = :BSA_CD, DP_TYPE = :DP_TYPE, TRANS_CD_DESC =:TRANS_CD_DESC WHERE ID = :ID">

        </asp:SqlDataSource>

您还需要一个查询页面和其他一些东西，请让我知道更多信息。

于 2012-08-08T02:29:40.963 回答
0

I do something like this. Quick easy and seems to work fine : 

cmd1.Connection = this.sqlConnection1;
this.sqlConnection1.Open();

 foreach (GridViewRow row in your_grid.Rows)
        {
            Label id = (Label)row.FindControl("your_control"); //what ever control you are using

            SqlCommand cmd1 = new SqlCommand();

            cmd1.CommandText = "insert into your_table values (@p,@p1,@p2)";

            cmd1.Parameters.Add("@p", SqlDbType.VarChar).Value = your_control.Text;
            cmd1.Parameters.Add("@p1", SqlDbType.VarChar).Value = your_control.Text;
            cmd1.Parameters.Add("@p2", SqlDbType.VarChar).Value = your_control.Text;


            cmd1.CommandType = CommandType.Text;


            cmd1.ExecuteNonQuery();

        }
            this.sqlConnection1.Close();
于 2013-04-01T16:37:29.290 回答