Problem with Image in DataGridView

Question

Good morning,

I want to show image (16*16px png file) in DataGridView. This Grid has 3 columns: text cell, text cell, image cell. Here is sample, how I try set image:

    private void showData(List<Item> collection)
    {
        gwQuestions.AutoGenerateColumns = false;
        gwQuestions.DataSource = addNotSet(collection);

        foreach (DataGridViewRow row in gwQuestions.Rows)
        {
            DataGridViewImageCell cell = row.Cells[2] as DataGridViewImageCell;
            cell.ValueType = typeof(System.Drawing.Image);
            if (collection[row.Index].Result)
            {
                cell.Value = (System.Drawing.Image)Properties.Resources.Check;
            }
            else
            {
                cell.Value = (System.Drawing.Image)Properties.Resources.Cancel;
            }
        }
    }

But in grid i show only red cross on paper, like File not found error. Can you help me please?

David Hall · Accepted Answer · 2011-07-31 22:20:33Z

1

This should work if you put your logic to assign the image within the CellFormatting event of the DataGridView:

dataGridView1.CellFormatting += dataGridView1_CellFormatting;

void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{            
    if (dataGridView1.Columns[e.ColumnIndex].Name == "ImageColumnName")
    {
        if (collection[e.RowIndex].Result)
        {
            e.Value = (System.Drawing.Image)Properties.Resources.Check;
        }
        else
        {
            e.Value = (System.Drawing.Image)Properties.Resources.Cancel;
        }
    }
}

Also note that you set e.Value rather than cell.Value here.

edited Jul 31, 2011 at 22:20

answered Jul 31, 2011 at 22:11

David Hall

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Comments

Community · Accepted Answer · 2017-05-23 12:11:59Z

0

Salvete! I was looking for a similar answer. If you don't mind my vb, try this post (where I answered myself...). The code shows how to load an image from resource into a datagridview.

How to dynamically swap a string for an image in Datagridview?

edited May 23, 2017 at 12:11

CommunityBot

11 silver badge

answered Dec 24, 2011 at 21:46

bgmCoder

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