Dynamic column count in datagridview

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Iam making a dynamic count in datagridview, i've done this in the followed ways. yet i can't solve it, perhaps someone else will know how to do my execution right.

i want it to do the followed;

the columns have to be counted (as rows) e.x. there are 30 columns you need to count from 0 to 30 and check each column 1by1, now the datatable is disposed on the load procedure so we can't get values from the datatable anymore, just the datagridview which is populated.

if somehow i could solve the cells[f] (count the cells from 0 to 30) than it would be solved but apperently somehow i cannot.

its hard to explain but i'd hope you will understand it.

C#

int columnz = datatable.columns.count;
columns.Text = columnz.ToString();

C#

for (int i = 0; i < dataGridView1.RowCount - 1; i++)
{
    for (int f = 0; i <= Convert.ToInt64(columns.Text); i++)
    {
        if (dataGridView1.Rows[i].Cells[f].Value.ToString() == null)
        {
            dataGridView1.Rows.RemoveAt(i);
            i--;
        }
    }
}

i've also tried to do Cells(f.tostring())... i dont know what to do anymore.

Posted 20-May-14 23:15pm

misterd1

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Comments

Animesh Datta 21-May-14 5:32am

In your second loop you are not checking the column one by one . change the loop like this way

for (int f = 0; f <= Convert.ToInt64(columns.Text); f++)

and let me know

misterd1 21-May-14 5:58am

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll

(falls out of value index? may not be negative or is incorrect)

Animesh Datta 21-May-14 6:09am

where the error occured ?

misterd1 21-May-14 6:48am

Additional information: The index is out of range. These must not be negative and must be less than the size of the collection.

Animesh Datta 21-May-14 7:01am

This error comes when datagridview has no rows or no cells and you want to compare its cell with another value .

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DamithSL · Answer 1 · 2014-05-21T00:59:00

try below code

C#

for (int row = 0; row < dataGridView1.Rows.Count; ++row) {
    bool isEmpty = false;
    for (int col = 0; col < dataGridView1.Columns.Count; ++col) {
        object value = dataGridView1.Rows[row].Cells[col].Value;
        if (value  == null || value  == DBNull.Value || String.IsNullOrWhitespace(value .ToString()) {
            isEmpty = true;
            break;
        }
    }
    if (isEmpty) {
        dataGridView1.Rows.RemoveAt(row--);
    }
}

Dynamic column count in datagridview

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Dynamic column count in datagridview

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