Question

我有2个表格

ApodeikseisTimologion
EggrafesTimologionEsodon

ApodeikseisTimologion是主要表单，EggrafesTimologionEsodon是每个表单中的子表单和1 datagridview（dataGridViewProionApodeixeisTimologiouEsodon和dataGridViewEggrafesProionParastikouEsodon）。

DataGridViewProionApodeixeisTimologiouEsodon属于主要表单，dataGridViewEggrafesProionParastikouEsodon属于子表单。现在，我想将选中的值从子表单传递给父表单，而不会丢失我已经放在父表单中的其他文本框中的值。这是我的代码：

表格ApodeikseisTimologion。我用它来打开子表单

private void LinkLblEisagogiEggrafon_Click(object sender, EventArgs e) {
    EggrafesTimologionEsodon eggrTimolEsodon = new EggrafesTimologionEsodon(cmbBoxEponimiaPelatiApodeixeisTimologiouEsodon.Text);
    eggrTimolEsodon.ShowDialog();
    this.Refresh();
}

表格EggrafesTimologionEsodon

private void EggrafesTimologionEsodon_Load(object sender, EventArgs e) {
    try {

        con = new SqlConnection();
        con = DBAccess.Conn;
        con.Open();

        adap = new SqlDataAdapter("select ProionParastatikou.* from ProionParastatikou inner join Parastatiko on ProionParastatikou.ParastatikoID = Parastatiko.ParastatikoID" +
                                      " where ProionParastatikou.Ypoloipo > 0.00  and Parastatiko.Eponimia = '" + txtPelatisId.Text + "'", con);
        ds = new System.Data.DataSet();
        adap.Fill(ds, "BsProionParastatikouEsodon");
        dataGridViewEggrafesProionParastikouEsodon.DataSource = ds.Tables[0];
        con.Close();
    }

    catch (Exception ex) {
        MessageBox.Show("Error\n" + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }

    finally {
        if (MyConn.State != ConnectionState.Closed)
            MyConn.Close();
        }
    }

我有这张图片：

在子窗体中，我还可以检查datagridview的checkbox列中的行，并将它们存储到列表中，以将它们传输到父窗体，而不会丢失我已经存在的其他数据。

private void BtnProsthikiEggrafon_Click(object sender, EventArgs e) {
    ApodeixeisTimologion apo = new ApodeixeisTimologion(null);
    List<Int64> lst2send = new List<Int64>();
    Int64 toSend;

    foreach (DataGridViewRow eggrafes in dataGridViewEggrafesProionParastikouEsodon.Rows) {
        if (Convert.ToBoolean(eggrafes.Cells["CheckBoxColumn"].Value)) {
            int RowIndexCheck = eggrafes.HeaderCell.RowIndex;             
                 Int64.TryParse(dataGridViewEggrafesProionParastikouEsodon.Rows[RowIndexCheck].Cells["proionParastatikouIDDataGridViewTextBoxColumn"].Value.ToString(),out toSend);
                lst2send.Add(toSend);
            }
        }

        apo.AfterProsthikiProionParastatikou(null, null, lst2send);
        //apo.Refresh();
        this.Close();
    }

当儿童表格关闭时，我会以父表格形式：

public void AfterProsthikiProionParastatikou(object sender,EventArgs e,IList<Int64> lst) {
    String csvLst = string.Empty;
    int count = 0;

    foreach ( Int64 lstItems in lst) {
        if (count == 0) {
            csvLst = lstItems.ToString();
            count += 1;
        }
        else {
            csvLst = csvLst + "," + lstItems.ToString();
        }
    }

     _con = new SqlConnection();
     _con = DBAccess.Conn;
     _con.Open();

     adap = new SqlDataAdapter("select ProionParastatikou.* from ProionParastatikou where" +
            " ProionParastatikou.Ypoloipo > 0.00  and ProionParastatikou.ProionParastatikouID"+
            " in( " + csvLst + ")", _con);

     ds = new System.Data.DataSet();
     adap.Fill(ds, "bsProionApodeixeisTimologiouEsodon");//
     dataGridViewProionApodeixeisTimologiouEsodon.DataSource = ds.Tables["bsProionApodeixeisTimologiouEsodon"];
     //dataGridViewProionApodeixeisTimologiouEsodon.Refresh();
     _con.Close();

 }

我在

中创建一个断点

ds = new System.Data.DataSet();
adap.Fill(ds, "bsProionApodeixeisTimologiouEsodon");//
dataGridViewProionApodeixeisTimologiouEsodon.DataSource = ds.Tables["bsProionApodeixeisTimologiouEsodon"];

我看到ds填充了正确的值，但是行没有出现在dataGridViewProionApodeixeisTimologiouEsodon中，这是父窗体中的网格。

在我使用datagrids中的数据集和bindingSources的所有表单中，除了checkbox列之外，datagrids是有界的。有人可以帮忙吗？如果有人需要更多帮助，我会给予它。

Answer 1

这是一个极小但有效的样本。在Form2上拥有一个公共属性，并从Form1访问它。我的代码片段正在传递一个字符串，但是你的代码片段将处理不同的数据类型。相同的概念，不同的数据类型。

Form1.cs的

using System;
using System.Windows.Forms;

namespace PassParamsFromForm2ToForm1_45997869
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            button1.Click += Button1_Click;
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2("blah blah blah");
            f2.ShowDialog();
            label1.Text = f2.returnValue;
        }
    }
}

Form2.cs

using System;
using System.Windows.Forms;

namespace PassParamsFromForm2ToForm1_45997869
{
    public partial class Form2 : Form
    {
        public string returnValue;
        private string submittedString { get; set; }
        public Form2(string incomingString)
        {
            InitializeComponent();
            submittedString = incomingString;
            button1.Click += Button1_Click;
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            returnValue = "I'd rather show you my value instead of yours(" + submittedString + ")...";
            this.Close();
        }
    }
}

使用网格类型

Form1.cs的

using System;
using System.Windows.Forms;
using System.ComponentModel;

namespace PassParamsFromForm2ToForm1_45997869
{
    public partial class Form1 : Form
    {
        BindingList<gridentry> gridList = new BindingList<gridentry>();
        DataGridView dgv = new DataGridView();
        DataGridView gridViewForTheReturnedRows;
        public Form1()
        {
            InitializeComponent();
            initializeGrid();
            addDataToGridSource("name1");
            addDataToGridSource("name2");
            addDataToGridSource("name3");
            addDataToGridSource("name4");
            button1.Click += Button1_Click;
        }

        private void addDataToGridSource(string incomingString)
        {
            gridList.Add(new gridentry { col1 = incomingString, col2 = incomingString + "in col2", col3 = incomingString + "in col3" });
        }

        private void initializeGrid()
        {
            dgv.Location = new System.Drawing.Point(this.Location.X + 5, this.Location.Y + 5);
            this.Controls.Add(dgv);
            dgv.AutoGenerateColumns = true;
            dgv.DataSource = gridList;
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2(dgv);
            f2.ShowDialog();

            if (f2.returnRows != null && f2.returnRows.Count > 0)
            {
                gridViewForTheReturnedRows = new DataGridView();
                gridViewForTheReturnedRows.ColumnCount = f2.returnRows[0].Cells.Count;
                gridViewForTheReturnedRows.Rows.InsertRange(0, f2.returnRows.ToArray());

                gridViewForTheReturnedRows.Location = new System.Drawing.Point(10, dgv.Location.Y + dgv.Height + 5);
                this.Controls.Add(gridViewForTheReturnedRows);
            }
        }
    }

    public class gridentry
    {
        public string col1 { get; set; }
        public string col2 { get; set; }
        public string col3 { get; set; }
    }
}

Form2.cs

using System;
using System.Windows.Forms;
using System.Collections.Generic;

namespace PassParamsFromForm2ToForm1_45997869
{
    public partial class Form2 : Form
    {
        public DataGridView returnGrid = new DataGridView();
        public List<DataGridViewRow> returnRows { get; set; }
        private DataGridView submittedGrid { get; set; }


        public Form2(DataGridView incomingGrid)
        {
            InitializeComponent();
            submittedGrid = incomingGrid;
            submittedGrid.Location = new System.Drawing.Point(this.Location.X + 5, this.Location.Y + 5);
            Controls.Add(submittedGrid);
            button1.Click += Button1_Click;
        }


        private void Button1_Click(object sender, EventArgs e)
        {
            returnGrid = submittedGrid;//if you want to return the grid

            //returning rows
            /*
             * You'll need your own mechanism to differentiate between 
             */
            bool rowIsModified = false;
            returnRows = new List<DataGridViewRow>();
            foreach (DataGridViewRow item in submittedGrid.Rows)
            {
                if (item.Index % 2 != 0)
                {
                    rowIsModified = true;
                }
                if (rowIsModified)
                {
                    DataGridViewRow r = (DataGridViewRow)item.Clone();
                    for (int i = 0; i < item.Cells.Count; i++)
                    {
                        r.Cells[i].Value = item.Cells[i].Value;
                    }
                    returnRows.Add(r);
                }
            }
            this.Close();
        }
    }
}

Answer 2

表格ApodeikseisTimologion。我用它来打开子表单

  2017-09-18 16:22:53.176524+0530 *** ***[359:20063] Task <5F9376DB-9335-
  4A45-B3F0-1D6FD69A19A3>.<29> finished with error - code: -999
  2017-09-18 16:22:53.178923+0530 *** ***[359:20142] Task <0DE282EA-3FBD-
  4036-8298-C75EFA65F15A>.<40> HTTP load failed (error code: -999 [1:89])
  2017-09-18 16:22:53.179821+0530 *** *[359:20063] Task <BE2D8BAE-FFB8-
  43CA-8723-111326DEF4FD>.<31> finished with error - code: -999
  2017-09-18 16:22:53.180089+0530 *** ***[359:20063] Task <E7C819D4-C11A-
  4915-B021-A73F31BE89CD>.<33> finished with error - code: -999
  2017-09-18 16:22:53.180365+0530 *** ***[359:20063] Task <3B871761-B006-
  4220-B857-6204B385AD34>.<34> finished with error - code: -999
  2017-09-18 16:22:53.180523+0530 *** ***[359:20142] Failed to get 
  TCPIOConnection in addInputHandler.

表格EggrafesTimologionEsodon

private void LinkLblEisagogiEggrafon_Click(object sender, EventArgs e)
        {
            if (cmbBoxEponimiaPelatiApodeixeisTimologiouEsodon.Text == "")
            {
                MessageBox.Show("Πρέπει να επιλέξετε Πελάτη", "Προειδοποίηση");
            }
            else
            {

                EggrafesTimologionEsodon eggrTimolEsodon = new EggrafesTimologionEsodon(cmbBoxEponimiaPelatiApodeixeisTimologiouEsodon.Text);//p

                eggrTimolEsodon.ShowDialog();

                listToFill = eggrTimolEsodon.lst2send;

                AfterProsthikiProionParastatikou(null,null,listToFill);

                //AfterProsthikiProionParastatikou(null);
                //this.Refresh();

            }


        }

由此我得到了最顶层的图像。

private void EggrafesTimologionEsodon_Load(object sender, EventArgs e)
        {

            //CmbBoxPelatis.SelectedIndex = -1;

            //EggrafesTimologionEsodon values = new EggrafesTimologionEsodon();
            try
            {

                con = new SqlConnection();
            con = DBAccess.Conn;
            con.Open();

            adap = new SqlDataAdapter("select ProionParastatikou.* from ProionParastatikou inner join Parastatiko on ProionParastatikou.ParastatikoID = Parastatiko.ParastatikoID" +
                                      " where ProionParastatikou.Ypoloipo > 0.00  and Parastatiko.Eponimia = '" + txtPelatisId.Text + "'", con);
            ds = new System.Data.DataSet();
            adap.Fill(ds, "BsProionParastatikouEsodon");
            dataGridViewEggrafesProionParastikouEsodon.DataSource = ds.Tables[0];

            con.Close();
            }

            catch (Exception ex)
            {
                MessageBox.Show("Error\n" + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            finally
            {
                if (MyConn.State != ConnectionState.Closed)
                    MyConn.Close();
            }
        }

当儿童表格关闭时，我会以父表格形式：

public List<Int64> lst2send;

        private void BtnProsthikiEggrafon_Click(object sender, EventArgs e)
        {
            lst2send = new List<Int64>();
            Int64 toSend;
            foreach (DataGridViewRow eggrafes in dataGridViewEggrafesProionParastikouEsodon.Rows)
            {
                if (Convert.ToBoolean(eggrafes.Cells["CheckBoxColumn"].Value))
                {
                    int RowIndexCheck = eggrafes.HeaderCell.RowIndex;             
                    Int64.TryParse(dataGridViewEggrafesProionParastikouEsodon.Rows[RowIndexCheck].Cells["proionParastatikouIDDataGridViewTextBoxColumn"].Value.ToString(),out toSend);
                    lst2send.Add(toSend);
                }

            }
            this.Close();

        }

我正在得到我想要的结果 enter image description here

将已检查的datagridview行从子表单传递到主表单datagridview

2 个答案: