Go through components of form C #

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Go through components of form C #

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#2 by (0 votes)

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Hello, I have a table coming from the database, with several rows and columns. One of these columns is stored the address of the previously saved image. Now I need to go through all the PictureBox and put in the ImageLocation the address of those image. Ah yes! Before I forget I have 10 PictureBox in form. I'm using the following code:

foreach (Control item in this.Controls)  
{  
if (item is PictureBox)
{
item.Name.ToString();//Até aqui tudo certo, consigo ver nome dele, mas preciso pegar nome e a propriedade ImageLocation 
}

Does anyone have an idea?

loop c# foreach

asked by anonymous 28.03.2015 / 18:58

2 answers

0

He came here unanswered. See how I solved my problem.

//Primeiro percorri as colunas do datatable;
for (int i = 0; i < Tabela.Rows.Count; i++)
{
//Garanti que as células não estejam vazias
Celula = Tabela.Rows[i][0].ToString();
if (Celula != "")
{
//Usei um switch para analisar a variável i do for
switch (i)
{
case 0:
PictureBox1.ImageLocation = Tabela.Rows[i][0].ToString();
break;
case 1:
ptb2lugar.ImageLocation = Tabela.Rows[i]0].ToString();
break;
case2:
ptb3lugar.ImageLocation = Tabela.Rows[i][0].ToString();
break;
case 3:
PictureBox2.ImageLocation = Tabela.Rows[i][0].ToString();
break;
}
}
}

28.03.2015 / 20:50

Sort chained list in Java how to load an address from a form on the map?

score 0 · Accepted Answer

I'll suggest the following:

Create the PictureBox dynamically, instead of adding them one by one by the designer:

public partial class Form1 : Form
{
    private PictureBox[] pictures;

    public Form1()
    {
        InitializeComponent();

        // criando as 10 PictureBox de que necessita
        this.pictures = Enumerable.Range(1, 10)
            .Select(this.CriarPictureBox)
            .ToArray();

        // eu estou adicionando dentro de um FlowLayout, mas poderia ser no Form,
        // ou dentro de qualquer outro contêiner de sua escolha
        this.flowLayoutPanel1.Controls.AddRange(this.pictures);
    }

    private PictureBox CriarPictureBox(int i)
    {
        return new PictureBox
        {
            Name = "pic" + i,
            Location = new Point(0, 0),
            Size = new Size(100, 100),
            BackColor = Color.Black,
            Visible = true,
        };
    }
}

With the PictureBox in an array, you can now refer to them using a numeric index inside the loading loop that reads the DataTable. Example:

private void CarregarImagens(DataTable tabela, int primeiraRow)
{
    for (int itPic = 0; itPic < this.pictures.Length; itPic++)
    {
        this.pictures[itPic].ImageLocation =
            tabela.Rows[itPic + primeiraRow]["NomeColuna"].ToString();
    }
}