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POAdding Matrices in C#?
 

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    <p>I'm trying to add two matrices together in C# using some simple for loops. I store the results in a data grid view. However, the last cell does not seem to add. I've been looking at this code for a while now and can't seem to figure it out. Did I do something wrong?</p> <pre><code> // Adds two matrices together using arrays. private void menuItemAdd_Click(object sender, EventArgs e) { // Create two 2-D arrays int[,] matrixOne = new int[dgvMatrixOne.RowCount, dgvMatrixOne.ColumnCount]; int[,] matrixTwo = new int[dgvMatrixTwo.RowCount, dgvMatrixTwo.ColumnCount]; // The rows of the total matrix match the rows of the first matrix. dgvMatrixTotal.RowCount = dgvMatrixOne.RowCount; // The columns of the total matrix match the columns of the first matrix. dgvMatrixTotal.ColumnCount = dgvMatrixOne.ColumnCount; // Fill matrix one with the data in the data grid matrix one. for (int i = 0; i &lt; dgvMatrixOne.RowCount; i++) { for (int j = 0; j &lt; dgvMatrixOne.ColumnCount; j++) { matrixOne[i, j] = Convert.ToInt32(dgvMatrixOne[i, j].Value); } } // Fill matrix two with the data in the data grid matrix two. for (int i = 0; i &lt; dgvMatrixTwo.RowCount; i++) { for (int j = 0; j &lt; dgvMatrixTwo.ColumnCount; j++) { matrixTwo[i, j] = Convert.ToInt32(dgvMatrixTwo[i, j].Value); } } // Set the total data grid to matrix one + matrix two. for (int i = 0; i &lt; dgvMatrixOne.RowCount; i++) { for (int j = 0; j &lt; dgvMatrixOne.ColumnCount; j++) { dgvMatrixTotal[i, j].Value = matrixOne[i, j] + matrixTwo[i, j]; } } } </code></pre>
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